公开(公告)号：US12162080B2

公开(公告)日：2024-12-10

申请号：US17521493

申请日：2021-11-08

Applicant: MAKITA CORPORATION

Inventor： Takeshi Kamiya

IPC: B23B45/02 ,  B23B45/00

Abstract: A housing holding a stator has increased rigidity. A vibration driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a gear case in front of the motor, a gear in the gear case to receive rotation of the rotor, an output shaft protruding frontward from the gear case to receive rotation from the gear, an integral cylindrical housing accommodating the motor and including a front portion with an opening and a rear portion closed, a gear case housing connected to the front portion of the integral cylindrical housing and including a right part and a left part and holding the gear case, and a grip housing extending downward from the gear case housing.

公开(公告)号：US20240405637A1

公开(公告)日：2024-12-05

申请号：US18804572

申请日：2024-08-14

Applicant: MAKITA CORPORATION

Inventor： Ryosuke HARA ,  Tomohiro UKAI

IPC: H02K7/14 ,  B23B45/00 ,  B23B45/02 ,  B23D49/16 ,  B26D5/14 ,  F16H21/18 ,  H02K5/04 ,  H02K5/20 ,  H02K7/04 ,  H02K7/075 ,  H02K9/02 ,  H02K9/06

Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.

公开(公告)号：US12151358B2

公开(公告)日：2024-11-26

申请号：US18184159

申请日：2023-03-15

Applicant: MAKITA CORPORATION

Inventor： Yoshihiro Ito ,  Tomohiko Imae ,  Jun Ueda

IPC: B25F5/00 ,  B25F5/02

Abstract: A power tool including a rear cover simplifies assembly. A driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a motor housing accommodating the motor, being cylindrical, and including a left housing and a right housing being laterally separable, a grip connected to a lower portion of the motor housing, an output unit in front of the motor and driven by the motor, and a rear cover supporting a rear portion of the rotor and closing a rear portion of the motor housing. The rear cover is held and fastened between the left housing and the right housing.

公开(公告)号：US12138740B2

公开(公告)日：2024-11-12

申请号：US17252317

申请日：2019-07-11

Applicant: MAKITA CORPORATION

Inventor： Ryosuke Otani

IPC: B24B55/05 ,  B24B23/02

Abstract: A wheel cover including a first cover attachable to a body of a power tool and a second cover removably attachable to the first cover reduces rattling of the second cover. The wheel cover includes a first cover attachable to a body of the power tool to cover at least a portion of a first surface of the tip tool adjacent to the body of the power tool, a second cover removably attachable to the first cover to cover at least a portion of a second surface of the tip tool opposite to the body of the power tool, and a rattle restrainer that reduces, while the second cover is attached to the first cover, rattling of the second cover relative to the first cover.

公开(公告)号：US20240372430A1

公开(公告)日：2024-11-07

申请号：US18582797

申请日：2024-02-21

Applicant: MAKITA CORPORATION

Inventor： Katsuyuki NIINOMI ,  Takaya YAMADA ,  Kengo UMEMURA

IPC: H02K5/20 ,  B24B23/02 ,  B24B47/12 ,  B25F5/00 ,  H02K1/18 ,  H02K5/14 ,  H02K7/08 ,  H02K7/14 ,  H02K9/06 ,  H02K9/28

Abstract: A power tool includes a motor and a housing. The motor includes a rotor rotatable in one direction about a motor rotation axis and including a rotor shaft to which a fan and a commutator are fixed, a stator surrounding the rotor, and a carbon brush in contact with the commutator. The housing supports the stator and includes a cylinder, a bottom connected to the cylinder, a vent in the bottom, and a rib protruding from the bottom. P1

公开(公告)号：US20240364097A1

公开(公告)日：2024-10-31

申请号：US18637892

申请日：2024-04-17

Applicant: MAKITA CORPORATION

Inventor： Kazuaki USAMI ,  Masayuki OKAMURA ,  Dai SUZUKI ,  Kouichi TAKEDA

IPC: H02H7/085 ,  A01G3/08 ,  B27B17/02 ,  B27B17/08

CPC classification number: H02H7/085 ,  B27B17/08 ,  A01G3/086 ,  B27B17/02

Abstract: An electric work machine according to the present disclosure includes: a motor; and a first control circuit. The first control circuit increases a first counter on the basis of the acquired or estimated line current value being greater than a current threshold. The first control circuit decreases the first counter on the basis of the calculated rotational speed being greater than a speed threshold. The first control circuit stops the motor on the basis of the first counter exceeding a first threshold.

公开(公告)号：US12121135B2

公开(公告)日：2024-10-22

申请号：US17954772

申请日：2022-09-28

Applicant: MAKITA CORPORATION

Inventor： Yoichiro Koike

IPC: A45F3/04 ,  A45F3/00

CPC classification number: A45F3/04 ,  A45F2003/003 ,  A45F2003/045

Abstract: A backpack-type assembly may include: a body; and a base member including a cooling port. The base member may include: a back plate attached to the body; and a harness attached to the back plate and configured to be worn on a user. The harness may include: at least one shoulder belt configured to be worn on a shoulder of the user; and a cooling fan. The cooling fan may be configured to circulate cooling air into or out of the base member through the cooling port of the base member.

公开(公告)号：US12115636B2

公开(公告)日：2024-10-15

申请号：US17988093

申请日：2022-11-16

Applicant: MAKITA CORPORATION

Inventor： Takeshi Kamiya

IPC: B25D11/06 ,  B25D11/10 ,  B25D17/04 ,  B25D17/08 ,  B25D17/26

CPC classification number: B25D11/064 ,  B25D11/10 ,  B25D17/04 ,  B25D17/08 ,  B25D17/26 ,  B25D2250/085 ,  B25D2250/141 ,  B25D2250/221

Abstract: To reduce size increase, a power tool includes a motor, an output shaft located frontward from the motor, rotatable by the motor, and having an insertion hole extending rearward from a front end of the output shaft, a bearing supporting the output shaft in a rotatable manner, a locking member supported by the output shaft and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool, a bit sleeve surrounding the output shaft, and movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member, and an operable member operable to move the bit sleeve and at least partly overlapping the bearing in an axial direction.

公开(公告)号：US12115626B2

公开(公告)日：2024-10-15

申请号：US18176892

申请日：2023-03-01

Applicant: MAKITA CORPORATION

Inventor： Kihiro Kusumoto

IPC: B25B21/02

CPC classification number: B25B21/02

Abstract: An impact tool has less size increase and improved striking efficiency. An impact tool includes a motor, a spindle rotatable with a rotational force from the motor and including a spindle shaft and a flange, an anvil, a hammer, first and second coil springs surrounding the spindle shaft, a cup washer, and a support ball. The anvil includes an anvil shaft to receive a tip tool and an anvil projection protruding radially outward from the anvil shaft. The hammer includes a hammer projection to strike the anvil projection in a rotation direction, a recess at a rear of the hammer, and a support groove inside the recess. The cup washer is located in the recess and supports front ends of the first and second coil springs. The support ball is located in the support groove and supports the cup washer.

公开(公告)号：US12109677B2

公开(公告)日：2024-10-08

申请号：US17845572

申请日：2022-06-21

Applicant: MAKITA CORPORATION

Inventor： Koji Takahagi ,  Yuta Araki

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

CPC classification number: B25F5/02 ,  B25B21/00 ,  B25F5/001 ,  H02K7/145

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.