公开(公告)号：US10850381B2

公开(公告)日：2020-12-01

申请号：US16097696

申请日：2017-05-10

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Hikaru Sunabe

IPC: B25D17/11 ,  B25D11/06 ,  B25D17/24 ,  B25D16/00

Abstract: An impact tool includes a tool-accessory holding part, a body and a first hammering member. The tool-accessory holding part has a through hole extending in a hammering-axis direction and is configured to hold the tool accessory inserted into the through hole to be movable in the hammering-axis direction. The body is connected to the tool-accessory holding part in the hammering-axis direction and has an internal space communicating with the through hole. The first hammering member is linearly movable in the hammering-axis direction and configured to drive the tool accessory in the hammering-axis direction by colliding with the tool accessory. The tool-accessory holding part and the body are connected in the hammering-axis direction via a first elastic element to be movable relative to each other. A second elastic element is interposed between the first hammering member and the body in a radial direction with respect to the hammering axis.

公开(公告)号：US10022852B2

公开(公告)日：2018-07-17

申请号：US14714719

申请日：2015-05-18

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Yoshitaka Machida ,  Masanori Furusawa

IPC: B25D17/24 ,  B25D11/04 ,  B25D11/12 ,  B25D17/04

Abstract: An electrical hammer (100) comprises a main housing (101), a hand grip (500) connected to the main housing (101) via a compression coil spring (321). In the electrical hammer (100), a hammer bit (119) is driven by a first motion converting mechanism (120) and thereby a hammering operation is performed. During the hammering operation, the hand grip (500) is moved against the main housing (101) in a state that biasing force of the compression coil spring (321) is applied on the hand grip (500). Further, the electrical hammer (100) comprises a second motion converting mechanism (220) which drives a counterweight (231).

公开(公告)号：US11707776B2

公开(公告)日：2023-07-25

申请号：US17567190

申请日：2022-01-03

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Yosuke Naoi

IPC: B21J15/26 ,  B21J15/28 ,  B21J15/10 ,  F16H3/00 ,  F16H1/46 ,  B25F5/00 ,  B21J15/02 ,  B21J15/04

CPC classification number: B21J15/26 ,  B21J15/105 ,  B21J15/28 ,  B25F5/001 ,  F16H1/46 ,  F16H3/005 ,  B21J15/022 ,  B21J15/043

Abstract: A power tool includes a motor and a gear speed reducer. The motor has a motor shaft that is rotatable in a normal direction and in a reverse direction. The gear speed reducer is operably coupled to the motor shaft. The gear speed reducer is configured such that a reduction ratio of the gear speed reducer is changed in response to a change of a rotation direction of the motor shaft.

公开(公告)号：US11607780B2

公开(公告)日：2023-03-21

申请号：US16966795

申请日：2019-02-07

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Shogo Tominaga

IPC: B25B21/00 ,  B25F5/00

Abstract: A work tool includes a housing, a spindle, a motor, a power-transmitting mechanism and a restricting member. The power-transmitting mechanism includes a sun member, a ring member, a carrier member and a planetary roller. One of the sun member and the ring member is configured to move together with the spindle in the front-rear direction relative to the other of the sun member and the ring member. The power-transmitting mechanism is configured to transmit power of the motor to the spindle when the sun member and the ring member relatively move toward each other in response to rearward movement of the spindle and the planetary roller gets into frictional contact with the sun member and the ring member. The restricting member is configured to restrict the planetary roller from moving in the front-rear direction relative to the housing.

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：US11185913B2

公开(公告)日：2021-11-30

申请号：US16465135

申请日：2017-11-24

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta ,  Toshihito Yabunaka ,  Takao Kuroyanagi

IPC: B21J15/26 ,  F16C19/30

Abstract: A fastening tool includes a bolt-gripping part, an anvil, a bolt-gripping-part driving mechanism, a motor, a housing, and thrust rolling bearings. The bolt-gripping-part driving mechanism includes a first mechanism part supported by the housing and a second mechanism part connected to the bolt-gripping part. The second mechanism part is configured to be driven in a longitudinal-axis direction by the first mechanism part being rotationally driven, so that the bolt-gripping part is moved in the longitudinal-axis direction relative to the anvil. The thrust rolling bearings are disposed on a first direction side and a second direction side of the first mechanism part, respectively.

公开(公告)号：US11117185B2

公开(公告)日：2021-09-14

申请号：US16624161

申请日：2018-06-08

Applicant: MAKITA CORPORATION

Inventor： Michisada Yabuguchi ,  Yuki Kawai ,  Hiroki Ikuta

IPC: B21J15/26 ,  B21J15/10 ,  B21J15/28 ,  B21J15/32 ,  B21J15/36

Abstract: A fastening tool includes a housing, a fastener-abutment part, a pin-gripping part held within the fastener-abutment part to be movable in a front-rear direction relative to the fastener-abutment part, a detection-target part provided to move together with the pin-gripping part, a detection device configured to detect the detection-target part, a motor, and a driving mechanism configured to move the pin-gripping part rearward from an initial position relative to the fastener-abutment part. The driving mechanism is further configured to move the pin-gripping part forward relative to the fastener-abutment part so as to return the pin-gripping part to the initial position based on a detection result of the detection device. The fastening tool is configured such that a first moving distance is adjustable, the first moving distance being a distance by which the pin-gripping part is moved from a detection position to the initial position.

公开(公告)号：US09427860B2

公开(公告)日：2016-08-30

申请号：US13768653

申请日：2013-02-15

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta

IPC: B25F5/00 ,  A61B17/14 ,  B24B23/04 ,  B27B19/00

CPC classification number: B25F5/001 ,  A61B17/142 ,  B24B23/04 ,  B27B19/006

Abstract: An electric oscillating tool which actuates a tool around a spindle is provided. The electric oscillating tool comprises a motor, the spindle which is driven by the motor, and a driving transmission member which transmits a rotational output of the motor to the spindle. The driving transmission member includes an eccentric moving member, a driven arm, a spindle connecting arm, and a pin which connects the driven arm and the spindle connecting arm in a relatively rotatable manner. The eccentric moving member comprises an eccentric shaft which moves eccentrically around a rotational shaft of the motor, a first bearing, and a second bearing.

Abstract translation: 提供了一种围绕心轴致动工具的电动摆动工具。 电动摆动工具包括电动机，由电动机驱动的主轴和将电动机的旋转输出传递到主轴的驱动传递部件。 驱动传递部件包括偏心移动部件，从动臂，主轴连接臂和以相对可旋转的方式连接从动臂和主轴连接臂的销。 偏心移动构件包括围绕马达的旋转轴偏心运动的偏心轴，第一轴承和第二轴承。

公开(公告)号：US11045861B2

公开(公告)日：2021-06-29

申请号：US16465120

申请日：2017-11-24

Applicant: MAKITA CORPORATION

Inventor： Yuki Kawai ,  Michisada Yabuguchi ,  Hiroki Ikuta ,  Toshihito Yabunaka

IPC: B21J15/26 ,  B21J15/28 ,  B21J15/02

Abstract: A fastening tool includes a bolt-gripping part, an anvil, a motor, and a control part. When the bolt-gripping part grips an end region of a shaft part and moves relative to the anvil in a first direction of a longitudinal-axis direction, the anvil presses a collar fitted onto the shaft part in a second direction opposite to the first direction of the longitudinal-axis direction and inward in a radial direction of the collar, so that a hollow part of the collar is crimped to a groove while the workpiece is clamped between the collar and a head part, whereby swaging of a fastener is completed while the end region remains integrated with the shaft part. The control part completes swaging of the fastener by terminating a movement of the bolt-gripping part in the first direction relative to the anvil based on driving current of the motor.

公开(公告)号：US09815182B2

公开(公告)日：2017-11-14

申请号：US14491542

申请日：2014-09-19

Applicant: MAKITA CORPORATION

Inventor： Hiroki Ikuta

IPC: B25B21/00 ,  B25B15/06 ,  B25F5/00

CPC classification number: B25B21/00 ,  B25B15/06 ,  B25F5/001

Abstract: A screw driver (100) which comprises a motor (110) and a rotation transmission mechanism (120) is provided. The rotation transmission mechanism (120) comprises a driving gear (125), a spindle (150), a roller (141) and a retainer (130). The retainer (130) moves the roller (140) in a circumference direction of the spindle (150) and thereby a position of the roller (140) between a transmittable position and a non-transmittable position is switched.