公开(公告)号：US20220395972A1

公开(公告)日：2022-12-15

申请号：US17747555

申请日：2022-05-18

申请人： MAKITA CORPORATION

发明人： Hitoshi IIDA ,  Hikaru SUNABE ,  Masanori FURUSAWA

IPC分类号： B25D16/00

摘要： A power tool having a rotary hammer mechanism has a first motor; a driving mechanism configured to operate by power of the first motor in an action mode selected from a plurality of action modes including a first mode of at least rotationally driving a tool accessory and a second mode of only linearly driving the accessory; a tool holder configured to be rotationally driven by torque transmitted from the first motor; a second motor; a clutch member configured to transmit torque to the holder in a transmitting position and to interrupt the transmission in an interrupting position; and a transmitting mechanism configured to convert rotation of the second motor into linear motion and transmit the linear motion to the clutch member. When the tool body excessively rotates around the driving axis, the second motor moves the clutch member from the transmitting position via transmitting mechanism to interrupt the transmission.

公开(公告)号：US20220395971A1

公开(公告)日：2022-12-15

申请号：US17747541

申请日：2022-05-18

申请人： MAKITA CORPORATION

发明人： Hitoshi IIDA ,  Masanori FURUSAWA ,  Kei WATANABE

IPC分类号： B25D16/00 ,  B25D17/04

摘要： A power tool having a rotary hammer mechanism has a motor, a driving mechanism, a tool body that houses the motor and the driving mechanism, a handle having a grip part, and a first operation member. The driving mechanism is configured to operate by power of the motor in an action mode that is selected from a plurality of operation modes including a first mode of at least rotationally driving a tool accessory around a driving axis and a second mode of only linearly driving the tool accessory along the driving axis. The grip part extends in a direction crossing the driving axis and is configured to be held by a user. The first operation member is on the tool body and faces the grip part. The first operation member is configured to be manually operated by the user to change the action mode of the driving mechanism.

公开(公告)号：US20220371169A1

公开(公告)日：2022-11-24

申请号：US17725757

申请日：2022-04-21

申请人： MAKITA CORPORATION

发明人： Shun KURIKI ,  Norikazu BABA

IPC分类号： B25C1/04 ,  B25C1/00

摘要： A driving tool comprises a displacement allowing mechanism that allows a wheel to be displaced in a radial direction of a rotation shaft. The driving tool further comprises a displacement restricting mechanism that restricts the wheel from being displaced in the radial direction of the rotation shaft. When a driver is to start being moved upwards by an engagement of a first engagement portion with an engaged portion by rotation of the wheel, a displacement restriction state of the wheel caused by the displacement restricting mechanism is released, allowing an entirety of the wheel to be displaceable in the radial direction of the rotation shaft due to the displacement allowing mechanism.

公开(公告)号：US20220371112A1

公开(公告)日：2022-11-24

申请号：US17751091

申请日：2022-05-23

申请人： MAKITA CORPORATION

发明人： Masayuki OKAMURA ,  Takuya KUSAKAWA ,  Itsuku KATO

IPC分类号： B23D49/00

摘要： An electric work machine in one aspect of the present disclosure includes a motor, a manual switch, and a control circuit. The control circuit switches a preset control either to be enabled or disabled. During the preset control being enabled, the control circuit (i) varies an actual rotational speed of the motor in accordance with an actual moved distance of the manual switch and (ii) increases the actual rotational speed in response to a load being imposed on the motor. During the preset control being disabled, the control circuit varies the actual rotational speed in accordance with the actual moved distance of the manual switch in a manner at least partly distinctive from a variation in the actual rotational speed during the preset control being enabled.

公开(公告)号：US20220352559A1

公开(公告)日：2022-11-03

申请号：US17764023

申请日：2020-09-24

申请人： MAKITA CORPORATION

发明人： Yonosuke AOKI ,  Tatsuki MORI

IPC分类号： H01M10/42 ,  H01M50/204 ,  H01M50/247 ,  H01M10/44 ,  H01M50/258 ,  H01M50/296

摘要： A battery pack in one aspect of the present disclosure includes two or more battery blocks and a connection circuit. The connection circuit is connected to a positive terminal and a negative terminal of an electric work machine. The connection circuit connects the positive terminal and the negative terminal to a specific number of battery blocks included in the two or more battery blocks. The specific number varies depending on electrical properties of the electric work machine.

公开(公告)号：US11484986B2

公开(公告)日：2022-11-01

申请号：US16468508

申请日：2017-11-20

申请人： MAKITA CORPORATION

发明人： Junichi Iwakami ,  Hideharu Muto ,  Ryosuke Otani

IPC分类号： B24B47/00 ,  B24B47/26 ,  B24B23/02 ,  B24B47/12 ,  B25F5/00

摘要： A grinder includes a brake mechanism, a switch lever, and a slide bar. In the grinder, an interlocking mechanism configured to interlock the brake mechanism with the switch lever includes a link member that is interposed between the switch lever and the slide bar, that moves the slide bar to the forward position at the push-in position of the switch lever, and that moves the slide bar to the retraction position at the initial position of the switch lever.

公开(公告)号：US11480330B2

公开(公告)日：2022-10-25

申请号：US17236644

申请日：2021-04-21

申请人： MAKITA CORPORATION

发明人： Naoharu Ishikawa

IPC分类号： B25C7/00 ,  B25C1/06 ,  B25C1/00 ,  F21V33/00 ,  F21V8/00

摘要： A driving tool allows easy assembly and effective illumination of an area around a nozzle. A driving tool includes a striking mechanism that strikes a fastener, a body including the striking mechanism and an illuminator, a nozzle to allow ejection of the fastener struck by the striking mechanism, and a light guide between the illuminator and the nozzle.

公开(公告)号：US11478915B2

公开(公告)日：2022-10-25

申请号：US16794512

申请日：2020-02-19

申请人： MAKITA CORPORATION

发明人： Hiroki Ikuta ,  Akira Mizutani

IPC分类号： B25F3/00 ,  B25F5/02 ,  B24B23/04 ,  B23D61/00

摘要： A work tool includes a housing, a spindle, a clamp shaft, a biasing member, an operation member, a motion-converting mechanism and a pushing-down member. The spindle is supported to be rotatable around a driving axis. The clamp shaft is movable in the up-down direction relative to the spindle. The biasing member is configured to bias the clamp shaft upward relative to the spindle so as to apply to the clamp shaft a clamping force for clamping a tool accessory between a head part of the clamp shaft and a lower end portion of the spindle. The motion-converting mechanism is configured to move the pushing-down member in the up-down direction along with turning of the operation member around the driving axis. The pushing-down member is configured to be moved downward so as to push the tool accessory downward when the operation member is turned in a first direction.

公开(公告)号：US20220337117A1

公开(公告)日：2022-10-20

申请号：US17658322

申请日：2022-04-07

申请人： MAKITA CORPORATION

发明人： Yoshinori SASAKI ,  Yoshihiro KIMURA

IPC分类号： H02K5/02 ,  H02K1/16 ,  H02K1/27 ,  H02K7/00 ,  H02K7/14 ,  H02K9/06

摘要： An electric work machine (1; 201) includes: a motor housing (6; 212) having a tube part (6C; 212C) and a bottom part (6M; 212M); a brushless motor (5; 228) having a stator (20), which has a first contact surface (58F; 258F), and a rotor (21; 231) disposed in the stator; a baffle plate (25; 285); and an output shaft (31; 292). The stator includes a tube-shaped stator core (50) having a ring-shaped second contact surface (50S; 250S) that is opposite of the first contact surface, and coils (56; 256) wound on the stator core. The stator is held by the motor housing with the first contact surface in contact with the bottom part. A protruding part (25S; 285S) of the baffle plate contacts the entire circumference of the second contact surface of the stator core and is fixed to the motor housing by three or more screws (68; 288).

公开(公告)号：US11476790B2

公开(公告)日：2022-10-18

申请号：US16715560

申请日：2019-12-16

申请人： MAKITA CORPORATION

发明人： Yoshitaka Ichikawa ,  Akihiro Nakamoto

IPC分类号： H02P29/024 ,  H02P27/06 ,  A01G3/06 ,  A01G3/053 ,  B25F5/02

摘要： An electric working machine in one aspect of the present disclosure includes two or more circuits and a control circuit. The control circuit executes two or more diagnoses one by one in order. The diagnoses at least include a first diagnosis and a second diagnosis. The first diagnosis diagnoses a first circuit. The second diagnosis diagnoses a second circuit. The control circuit executes the first diagnosis or the second diagnosis at a first diagnosis timing. The control circuit executes the first diagnosis or the second diagnosis at a second diagnosis timing. The second diagnosis timing follows the first diagnosis timing.