公开(公告)号：US20220371169A1

公开(公告)日：2022-11-24

申请号：US17725757

申请日：2022-04-21

Applicant: MAKITA CORPORATION

Inventor： Shun KURIKI ,  Norikazu BABA

IPC: B25C1/04 ,  B25C1/00

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Masayuki OKAMURA ,  Takuya KUSAKAWA ,  Itsuku KATO

IPC: B23D49/00

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Yonosuke AOKI ,  Tatsuki MORI

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

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Junichi Iwakami ,  Hideharu Muto ,  Ryosuke Otani

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

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Naoharu Ishikawa

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

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Akira Mizutani

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

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Yoshinori SASAKI ,  Yoshihiro KIMURA

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

Abstract: 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

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka Ichikawa ,  Akihiro Nakamoto

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

Abstract: 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.

公开(公告)号：US11476735B2

公开(公告)日：2022-10-18

申请号：US16834414

申请日：2020-03-30

Applicant: MAKITA CORPORATION

Inventor： Yoshinori Sasaki

IPC: H02K7/14 ,  H02K1/276 ,  H02K1/18 ,  H02K9/06 ,  H02K9/22 ,  B25F5/02 ,  H02K1/30

Abstract: An electric work machine with a product structure that effectively reduces noise caused by a brushless motor without changing the motor specifications. A hammer drill includes a brushless motor including a stator including an insulator, a cylindrical stator core, and a coil wound around the stator core via the insulator, and a rotor rotatable relative to the stator, a cylindrical member fixed along an entire outer circumference of the stator core and made of material with a Young's modulus higher than a Young's modulus of the insulator, and a housing accommodating the brushless motor and the cylindrical member.

公开(公告)号：US20220322909A1

公开(公告)日：2022-10-13

申请号：US17691287

申请日：2022-03-10

Applicant: MAKITA CORPORATION

Inventor： Kenta MORIMOTO ,  Takuo ARAKAWA

IPC: A47L11/40 ,  A47L11/24 ,  A46B13/00 ,  A46B13/02 ,  A47L9/04 ,  A47L9/00 ,  A47L9/32

Abstract: A cleaning machine may include: a first brush comprising a first brush shaft extending in a left-right direction and a first brush body held by the first brush shaft; a second brush comprising a second brush shaft extending in the left-right direction and a second brush body held on the second brush shaft; a brush supporting member supporting each of the first brush and the second brush such that the first brush and the second brush are rotatable; a body supporting the brush supporting member such that the brush supporting member is pivotable; and a pivot mechanism configured to pivot the brush supporting member with respect to the body. At least the first brush may move with respect to the body in an up-down direction when the brush supporting member pivots with respect to the body.