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公开(公告)号：US11981016B2
公开(公告)日：2024-05-14
申请号：US17637902
申请日：2020-06-19
发明人： Kotaro Momoeda
IPC分类号： B25F5/00 , B25B23/147 , H02P21/26
CPC分类号： B25F5/001 , H02P21/26 , B25B23/147
摘要： In an electric tool, a motor has a permanent magnet and a coil. An operating member receives an operating command. A control unit performs driving control on the motor in accordance with the operating command. A transmission mechanism transmits motive power of the motor to an output shaft. A switching mechanism switches an operation mode of the electric tool from a first mode to a second mode, or vice versa. Magnitude of variation in a rotational speed of the output shaft in response to a change by a unit quantity in an output torque of the output shaft is smaller in the first mode than in the second mode. The control unit can perform, in the first mode, flux weakening control that causes a flux weakening current to flow through the coil to make the coil generate a magnetic flux that weakens a magnetic flux of the permanent magnet.
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公开(公告)号：US20240149407A1
公开(公告)日：2024-05-09
申请号：US18549861
申请日：2022-03-10
申请人： CEMBRE S.P.A.
IPC分类号： B25B21/02 , B25B21/00 , B25B23/147 , B25B23/16 , B25F5/00
CPC分类号： B25B21/02 , B25B23/1475 , B25B23/16 , B25F5/006 , B25F5/008 , B25B21/002
摘要： An impact wrench includes a motor unit with a motor adapted to produce a rotary motion and an operating switch for operating the motor. A tool-holder shaft rotatable about a rotation axis. A transmission unit with a percussion mechanism, connects between the motor unit and the tool-holder shaft. A handlebar structure has two manual gripping handles. An electronic control system contains at least one electronic control board connected to one or more electric batteries and to the operating switch. A damping connection system mechanically connects a transmission housing of the transmission unit to a main housing of the motor unit and the main housing to the handlebar structure. The damping connection system includes: one or more first damper elements interposed between the transmission housing and the main housing, and one or more second damper elements interposed between the main housing and the handlebar structure.
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公开(公告)号：US20240146079A1
公开(公告)日：2024-05-02
申请号：US18409182
申请日：2024-01-10
申请人： MAKITA CORPORATION
发明人： Tomoyuki Ota , Kiyoshi Nishibe , Hitoshi Suzuki
IPC分类号： H02J7/00 , B25F5/00 , H01M10/48 , H01M50/213 , H01M50/244 , H01M50/247 , H01M50/267 , H01M50/296 , H01M50/574
CPC分类号： H02J7/00309 , B25F5/00 , H01M10/48 , H01M10/488 , H01M50/213 , H01M50/244 , H01M50/247 , H01M50/267 , H01M50/296 , H01M50/574 , H02J7/0045 , H02J7/0063 , H02J7/007182 , B23B2260/024 , H01M6/42 , H01M2220/30
摘要： An electric power tool includes a main body supporting a tool. An electric motor is housed in the main body and configured to drive the tool. A plurality of battery interfaces is integrally formed on the main body, each battery interface having a positive battery terminal and a negative battery terminal. Each battery interface is configured to removably receive a positive battery terminal and a negative battery terminal of a corresponding one of a plurality of battery packs and to electrically connect the plurality of attached battery packs in series with the electric motor. Each of the plurality of battery packs comprises a movable latch configured to engage a corresponding engagement structure defined on or near the corresponding battery interface.
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公开(公告)号：US20240139915A1
公开(公告)日：2024-05-02
申请号：US18409099
申请日：2024-01-10
申请人： MAKITA CORPORATION
CPC分类号： B25B21/02 , B25B21/026 , B25F5/001 , B25F5/008 , B25F5/02 , B25B23/1405
摘要： An impact tool includes a brushless motor having a rotor extending in a front-rear direction and disposed in a motor housing constituted by left, right and rear motor housings. A battery pack is disposed below the motor housing in an up-down direction. A plurality of first screws extend in a left-right direction and fix the left motor housing to the right motor housing. A plurality of second screws extend in the front-rear direction and fix the rear motor housing to the left and right motor housings. A fan is disposed between the rotor and the rear motor housing, a grip housing is disposed downward of the motor housing, and a planetary gear mechanism is disposed frontward of the motor. A spindle is disposed frontward of the planetary gear mechanism, a hammer is disposed on an outer circumference of the spindle, and an anvil is disposed frontward of the hammer.
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公开(公告)号：US11973387B2
公开(公告)日：2024-04-30
申请号：US17596745
申请日：2020-06-19
申请人： MAKITA CORPORATION
发明人： Akira Naito
摘要： An electric work machine (1) includes a motor (8) having a rotor (23) disposed within a stator core (31) and coils (34) disposed on the stator core; a power-transmission mechanism (10) driven by the rotor; and an output shaft (6), on which a tool accessory is mountable and which is operably driven by the power-transmission mechanism. The stator core includes an outer-side member (40) having projection parts (42) protruding radially inward from a circular-ring part (41) in a spaced apart manner in a circumferential direction of the stator core and respectively supporting the coils; and an inner-side member (43) disposed radially inward of the outer-side member and coupled to inner-end portions of the projection parts. A plurality of first insulators (32) and a plurality of second insulators (33) may be respectively disposed around the projection parts and interconnected in an alternating manner in the circumferential direction.
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公开(公告)号：US20240131604A1
公开(公告)日：2024-04-25
申请号：US18530124
申请日：2023-12-05
IPC分类号： B23D29/00 , B23D35/00 , B25B7/12 , B25F5/00 , H01R43/042
CPC分类号： B23D29/00 , B23D29/002 , B23D35/002 , B23D35/008 , B25B7/126 , B25F5/005 , H01R43/0427 , B23D17/06
摘要： A hydraulic power tool includes a housing defining a cylinder, a piston at least partially positioned within the cylinder and movable between a retracted position and an extended position, a clevis supporting a head of the power tool, a nut coupled to an outer peripheral surface of the clevis, and a collar coupled to the housing and surrounding the nut to axially constrain the nut between the collar and the housing while permitting relative rotation between the collar and the nut.
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公开(公告)号：US11964367B2
公开(公告)日：2024-04-23
申请号：US17008925
申请日：2020-09-01
申请人： Robert Bosch GmbH
摘要： A hand-held power tool, in particular a screwdriver, includes an elongate housing, in which is arranged a drive motor for driving an insertion tool, which can be arranged in an associated tool holder. The housing has a grip region, in which at least one operating element for activating the drive motor is arranged. A sliding switch for activating reversing operation of the drive motor is arranged on the housing, a first activating unit is provided for activating the drive motor as a result of axial contact of the tool holder against a workpiece which is to be machined, and a second activating unit is provided for activating the drive motor as a result of activation of the operating element. A selector is designed to deactivate the first or second activating unit and/or to prioritize the first or second activating unit.
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公开(公告)号：US20240123581A1
公开(公告)日：2024-04-18
申请号：US18451166
申请日：2023-08-17
发明人： Guangjie Ji , Hongtao Ke , Shuai Chen
摘要： An impact tool includes a housing; an electric motor including a motor shaft rotating about a first axis; an output shaft used for outputting power and rotating about an output axis; and an impact assembly used for providing an impact force for the output shaft and including a main shaft, where the main shaft is driven by the motor shaft to rotate about an axis of the main shaft. The housing includes a first housing for accommodating at least part of the main shaft, and a support portion that forms sliding friction with the main shaft in the direction of rotation of the main shaft is formed on or connected to an inner wall of the first housing.
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公开(公告)号：US11958158B2
公开(公告)日：2024-04-16
申请号：US18164509
申请日：2023-02-03
发明人： Yuuki Takeda , Hironori Sakai
CPC分类号： B24B23/02 , B24B55/00 , B25F5/008 , B25F5/02 , H02K7/145 , H02K9/14 , H02K11/33 , H02K7/1163
摘要： An electric tool includes a housing; a brushless motor, housed in the housing; an output shaft configured to hold a tip tool; a switching circuit controlling the brushless motor; a circuit board; a case, accommodating the circuit board, the case is filled with a resin, wherein the resin covers at least a part of the circuit board; the housing includes a motor housing element and a cover element covering at least a part of the case. The motor housing element includes a motor housing part accommodating the brushless motor, and a fixing part, configured to fix the case to the motor housing by the fixing part abutting the case.
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公开(公告)号：US11957237B2
公开(公告)日：2024-04-16
申请号：US17452465
申请日：2021-10-27
申请人： Black & Decker Inc.
发明人： Norbert Hahn
CPC分类号： A45F5/021 , A45F5/00 , B23B45/003 , B25F5/00 , B25H3/00 , A45F2005/006 , A45F2200/0575 , B25D17/20 , B25D17/28
摘要： A power tool assembly is provided including a portable power tool, at least one first auxiliary part connected in a functional manner to the portable power tool, and a lanyard mounted on the power tool and the at least one first auxiliary part to hold the at least one first auxiliary part functionally connected to the portable power tool when the power tool assembly is dropped. The lanyard may include a belt and a sheaf surrounding the belt, where visual information is provided on the external surface of the sheaf.
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