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：US12023744B2

公开(公告)日：2024-07-02

申请号：US17298370

申请日：2019-12-13

Applicant: MAKITA CORPORATION

Inventor： Hikaru Sunabe ,  Akihiro Ito

IPC: B23B45/00 ,  B23B45/02 ,  B23B45/06 ,  B25F5/02 ,  H02P6/17 ,  B25B23/147 ,  B25D16/00

CPC classification number: B23B45/02 ,  B23B45/06 ,  B25F5/02 ,  H02P6/17 ,  B23B45/00 ,  B25B23/147 ,  B25D16/00 ,  B25D16/006

Abstract: A drilling tool includes a tool body, a brushless motor, a first detector, a second detector and a control device. The brushless motor is housed in the tool body and configured to drive the tool accessory. The first detector is configured to detect first information corresponding to a load applied to the tool accessory. The second detector is configured to detect second information corresponding to a rotation state of the tool body around the driving axis. The control device is configured to control operation of the drilling tool. The control device is configured to set a conduction angle for the brushless motor based on the first information, and to determine, based on the first information and the second information, whether or not excessive rotation of the tool body due to jamming of the tool accessory occurs.

公开(公告)号：US10410811B2

公开(公告)日：2019-09-10

申请号：US15264870

申请日：2016-09-14

Applicant: MAKITA CORPORATION

Inventor： Takamasa Hanai ,  Hikaru Sunabe ,  Satoshi Ninagawa ,  Shin Nakamura ,  Masatoshi Nakahama ,  Kazusa Fukuda ,  Kenichi Miyata

IPC: H01H25/00 ,  B24B23/02 ,  B25F5/02 ,  H01H9/06 ,  H01H9/20 ,  H01H21/00 ,  B25F5/00 ,  H01H1/50

Abstract: A power tool (1) includes an electric motor (2) as a drive source and a start switch (20; 61) that starts the electric motor (2) and is lockable in an ON position in a lock-ON state. An electromagnetic actuator (30; 40; 50; 60) pushes out or pulls in an actuation pin (30a; 40a; 50a; 60a) with respect to a body of the electromagnetic actuator (30; 40; 50; 60) in response to cutting off of a supply of electrical current to the power tool (1). The pushed-out or pulled-in actuation pin, directly or indirectly, disengages the start switch (20; 61) from the lock-ON state and/or prevents the start switch (20; 61) from being shifted into the lock-ON state.

公开(公告)号：US11607789B2

公开(公告)日：2023-03-21

申请号：US17018079

申请日：2020-09-11

Applicant: MAKITA CORPORATION

Inventor： Hikaru Sunabe ,  Hirokatsu Yamamoto ,  Takaaki Osada

IPC: B25F5/00 ,  B25F5/02 ,  H02P29/00 ,  B25B21/00 ,  B25D16/00

Abstract: An electric working machine in one aspect of the present disclosure includes an output shaft, a motor, a housing, an acceleration detector, a twisted motion detector, a reference level changer, and a motor controller. The acceleration detector detects an acceleration of the housing in a circumferential direction of the output shaft. The twisted motion detector detects a twisted motion of the housing based on a reference level and the acceleration detected. The reference level determines that the housing is twisted. The reference level changer changes the reference level based on a rotating motion of the output shaft.

公开(公告)号：US11543554B2

公开(公告)日：2023-01-03

申请号：US16800143

申请日：2020-02-25

Applicant: MAKITA CORPORATION

Inventor： Toshiro Hirayama ,  Hajime Takeuchi ,  Hikaru Sunabe

IPC: G01V3/12 ,  G06F1/16

Abstract: An embedded-object scanner device includes a sensing device housed in a housing and configured to sense one or more embedded objects embedded in a target material, and a display device provided on the housing. The display device is configured to collectively display multiple sets of display data generated in multiple sensing operations performed by the sensing device.

公开(公告)号：US10953532B2

公开(公告)日：2021-03-23

申请号：US15723757

申请日：2017-10-03

Applicant: MAKITA CORPORATION

Inventor： Hikaru Sunabe ,  Hirokatsu Yamamoto ,  Takaaki Osada

IPC: B25D16/00 ,  B25D17/20 ,  B25D17/24 ,  F21V33/00 ,  B25D11/00 ,  B25D17/04

Abstract: An electric power tool is configured to rotate an attachment about a Z-axis. The electric power tool includes a three-axes acceleration sensor and an acceleration detection circuit. The acceleration detection circuit calculates an angular acceleration about the Z-axis based on an input signal from the three-axes acceleration sensor. The acceleration detection circuit calculates a change in an angular velocity based on integrating the angular acceleration for a most recent period. The acceleration detection circuit determines a Z-axis angular velocity about the Z-axis, without adding a previous change in the angular velocity from before the most recent period, as equal to the change in angular velocity. The acceleration detection circuit detects a twisted-motion of the electric power tool based on the Z-axis angular velocity.

公开(公告)号：US12025764B2

公开(公告)日：2024-07-02

申请号：US18089640

申请日：2022-12-28

Applicant: MAKITA CORPORATION

Inventor： Toshiro Hirayama ,  Hajime Takeuchi ,  Hikaru Sunabe

IPC: G01V3/12 ,  G06F1/16

CPC classification number: G01V3/12 ,  G06F1/1637

Abstract: An embedded-object scanner device includes a housing and a sensing device, which is housed in the housing and senses one or more embedded objects embedded in a target material when moved across the target material. One or more illumination devices is provided on the housing for illuminating at least a portion of the surface of the target material.

公开(公告)号：US11878403B2

公开(公告)日：2024-01-23

申请号：US17298093

申请日：2019-12-13

Applicant: MAKITA CORPORATION

Inventor： Hikaru Sunabe ,  Akihiro Ito

IPC: B25F5/02 ,  B25F5/00

CPC classification number: B25F5/02 ,  B25F5/001

Abstract: A rotary tool includes a tool body, a motor, a determining part, a monitoring part and a criterion changing part. The motor is housed in the tool body and configured to drive the tool accessory. The determining part is configured to determine whether or not excessive rotation of the tool body around the driving axis due to jamming of the tool accessory occurs, according to a specific determination criterion. The monitoring part is configured to monitor information relating to a use state of the rotary tool. The criterion changing part is configured to change the determination criterion according to the use state.

公开(公告)号：USD935903S1

公开(公告)日：2021-11-16

申请号：US29707044

申请日：2019-09-25

Applicant: MAKITA CORPORATION

Designer： Kazunori Hattori ,  Hikaru Sunabe