公开(公告)号：US20210078146A1

公开(公告)日：2021-03-18

申请号：US17015812

申请日：2020-09-09

Applicant: MAKITA CORPORATION

Inventor： Yuta ARAKI ,  Akira ITO

IPC: B25B23/147 ,  B25F5/00 ,  H02K7/14 ,  B25F5/02

Abstract: An electric work machine (1A; 1B; 1C; 1D), such as a power tool or outdoor power equipment, includes: a motor (6; 6B; 6C; 6D); an output shaft (8A; 8B; 8C; 8D) driven using power (rotational motion) output by the motor; a dial (16) configured to rotate 360° or more around a dial axis (DX); a rotation sensor (56) configured to detect rotation of the dial; and a controller (17). The controller (17) comprises a setting-instruction part (17F) and/or stored instructions configured to output, based on detection data from the rotation sensor, a setting instruction that sets a drive condition of the motor.

公开(公告)号：US20220297273A1

公开(公告)日：2022-09-22

申请号：US17806163

申请日：2022-06-09

Applicant: MAKITA CORPORATION

Inventor： Yuta ARAKI ,  Akira ITO

IPC: B25B23/147 ,  B25B21/02 ,  B25D16/00 ,  B25B21/00

Abstract: A driver drill includes a motor housing that holds an electric motor, an axis of rotation of a rotor of the electric motor extending in a front-rear direction of the driver drill, a grip housing having an upper end connected to a lower part of the motor housing and an enlarged-part housing connected to a lower end of the grip housing and spaced from the motor housing in an up-down direction of the driver drill that is perpendicular to the front-rear direction. A torque setting of the driver drill is changeable, and the driver drill is changeable between a setting unlocked state in which the torque setting is changeable and a setting locked state in which the torque setting is not changeable.

公开(公告)号：US20240351181A1

公开(公告)日：2024-10-24

申请号：US18632492

申请日：2024-04-11

Applicant: MAKITA CORPORATION

Inventor： Hidenori NAGASAKA ,  Yuta ARAKI ,  Ryoichi ISHIKAWA ,  Tomohiko IMAE

IPC: B25F5/02 ,  B25F5/00 ,  E21B11/00

CPC classification number: B25F5/02 ,  B25F5/001 ,  E21B11/005

Abstract: A rechargeable angle drill includes: a motor, which includes a rotor configured to rotate about a motor rotation axis, the motor rotation axis extending in an up-down direction; a motor housing part, which houses the motor; a trigger lever, which is operated to start the motor; a handle housing part, which is disposed upward of the motor housing part and in which the trigger lever is provided; a speed reduction mechanism; a gear housing part, which is disposed downward of the motor housing part and houses the speed reduction mechanism; and a rotation output part, which protrudes forward from the gear housing part and rotates about an output rotation axis orthogonal to the motor rotation axis based on a rotational force transmitted from the motor via the speed reduction mechanism. The trigger lever is disposed upward of a center of the handle housing part in the up-down direction.

公开(公告)号：US20230256572A1

公开(公告)日：2023-08-17

申请号：US18140717

申请日：2023-04-28

Applicant: MAKITA CORPORATION

Inventor： Yuta ARAKI ,  Motohiro OMURA ,  Akira ITO

IPC: B25B21/00 ,  B25F5/00 ,  B25B23/147

CPC classification number: B25B21/008 ,  B25F5/001 ,  B25B23/147

Abstract: A rotary tool includes a motor having an axis of rotation extending in a forward-rearward direction of the rotary tool. A grip part is located below the axis of rotation in an up-down direction that is perpendicular to the forward-rearward direction. A planet gear is configured to be driven by the motor. An internal gear meshes with the planet gear and is movable in the forward-rearward direction to change a speed. A sun gear meshes with the planet gear, and an output shaft is configured to be rotationally driven by the sun gear. A sensor is configured to detect the forward-rearward movement of the internal gear, the sensor being disposed downward of the sun gear in the up-down direction.

公开(公告)号：US20230158657A1

公开(公告)日：2023-05-25

申请号：US17952510

申请日：2022-09-26

Applicant: MAKITA CORPORATION

Inventor： Yukiko EBA ,  Yuta ARAKI

IPC: B25F5/00

CPC classification number: B25F5/001 ,  B25B21/00

Abstract: An electric work machine reduces damage to its components under a greater load on a spindle. An electric work machine includes a motor, a planetary gear assembly rotatable with a rotational force from the motor and including a carrier having a hole having an inner surface including two carrier flat surfaces, a spindle including a rear portion received in the hole and having an outer surface including two spindle flat surfaces, and a spindle locking assembly that transmits a rotational force in one direction from the carrier to the spindle and including a lock cam surrounding the spindle frontward from a front surface of the carrier and rotatable together with the spindle, a lock ring surrounding the lock cam, and a plurality of cylindrical members between the lock cam and the lock ring.

公开(公告)号：US20230043839A1

公开(公告)日：2023-02-09

申请号：US17845572

申请日：2022-06-21

Applicant: MAKITA CORPORATION

Inventor： Koji TAKAHAGI ,  Yuta ARAKI

IPC: B25F5/02 ,  H02K7/14 ,  B25F5/00 ,  B25B21/00

Abstract: A driver drill allows smooth change of the drive conditions of a motor. The driver drill includes a motor, an output unit located frontward from the motor and rotatable with a rotational force from the motor, a trigger lever operable to activate the motor, a forward-reverse switch lever operable to change a rotation direction of the motor, a first operation member operable to change a drive condition of the motor, a second operation member located upward from the first operation member and operable to change the drive condition of the motor, and a controller that sets the drive condition of the motor in response to an operation on at least one of the first operation member or the second operation member.

公开(公告)号：US20200262036A1

公开(公告)日：2020-08-20

申请号：US16793302

申请日：2020-02-18

Applicant: MAKITA CORPORATION

Inventor： Yuta ARAKI ,  Hidenori NAGASAKA ,  Manabu SUGIMOTO

IPC: B25B21/02

Abstract: A power tool, such as a hammer driver-drill (1), includes a spindle (26) that is axially and rotatable supported inside a metal gear case (41). A first cam (83) is affixed to the spindle so as to rotate therewith and is housed in the gear case (41). A second cam (84) is disposed around spindle such that it is rotatable separately with respect to the spindle and can be brought into contact with the first cam. Hammer-switching levers (95) are movable relative to the gear case between an advanced position, at which rotation of the second cam is restricted (blocked), and a retracted position, at which the rotational restriction on the second cam is released. Receiving members (89) are respectively interposed between the gear case and the hammer-switching levers and are configured to absorb vibration generated when a hammering operation is being performed using the power tool.

公开(公告)号：US20240408737A1

公开(公告)日：2024-12-12

申请号：US18680038

申请日：2024-05-31

Applicant: MAKITA CORPORATION

Inventor： Takao KUROYANAGI ,  Yuta ARAKI ,  Shizuki OKAJIMA ,  Taisei OSAWA ,  Shingo SAKURAYAMA

IPC: B25F5/00 ,  B23B45/00 ,  B23B45/02 ,  B25B21/02

Abstract: A driver-drill (1) includes a motor (6) having a stator (61) and a rotor (62); an output part (8) including: a spindle (81), which is disposed more forward than the motor and, in response to application of a rotational force transmitted from the rotor, is rotated around a rotational axis (AX) extending in the front-rear direction; and a chuck (82), which is mounted on the spindle; and a speed-reducing mechanism (30), which is configured to rotate the output part at a rotational speed that is lower than the rotational speed of the rotor but at a higher torque. The maximum fastening torque of the output part is 160 N·m or more.

公开(公告)号：US20230356382A1

公开(公告)日：2023-11-09

申请号：US17795398

申请日：2021-03-02

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA ,  Koji TAKAHAGI ,  Tomohiko IMAE ,  Jun UEDA ,  Yuta ARAKI ,  Hidenori NAGASAKA

IPC: B25F5/02

CPC classification number: B25F5/026

Abstract: A power tool receives a reaction force with an auxiliary handle attached to the power tool. An auxiliary handle attachable to a power tool includes a first arm, a second arm that fastens, together with the first arm, at least a part of the power tool located between the first arm and the second arm, a handle, a grip sensor that detects the handle being gripped with the first arm and the second arm fastening at least the part of the power tool in between, and a signal output unit that outputs, to the power tool, a grip signal indicating that the handle is gripped based on a detection signal from the grip sensor.

公开(公告)号：US20230241754A1

公开(公告)日：2023-08-03

申请号：US18090203

申请日：2022-12-28

Applicant: MAKITA CORPORATION

Inventor： Yuta ARAKI

IPC: B25F5/02

CPC classification number: B25F5/02 ,  B25F3/00

Abstract: An adapter is configured to be removably mounted to a rotary tool, the rotary tool having a battery mounting part configured such that a battery can be removably mounted thereto and an output shaft that is rotationally driven by power supply from the battery mounted to the battery mounting part. The adapter has a housing, a first mounting part that is formed on the housing and configured to be removably mounted to the battery mounting part, a second mounting part that is formed on the housing and configured such that the battery can be removably mounted thereto, and a detection part that is configured to detect the moving state of the adapter in at least one direction.