公开(公告)号：US20180099392A1

公开(公告)日：2018-04-12

申请号：US15723757

申请日：2017-10-03

Applicant: MAKITA CORPORATION

Inventor： Hikaru SUNABE ,  Hirokatsu YAMAMOTO ,  Takaaki OSADA

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

CPC classification number: B25D11/005 ,  B25D16/006 ,  B25D17/043 ,  B25D17/24 ,  B25D2216/0015 ,  B25D2216/0023 ,  B25D2216/0038 ,  B25D2216/0084 ,  B25D2217/0057 ,  B25D2222/72 ,  B25D2250/095 ,  B25D2250/221 ,  B25D2250/265

Abstract: An electric power tool includes a housing, a motor, an output shaft, an acceleration sensor, and a twisted-motion detector. The housing is configured to house the motor and the output shaft. The acceleration sensor is configured to detect acceleration of the housing. The twisted-motion detector is configured to repeatedly obtain acceleration of the housing in the circumferential direction of the output shaft, to calculate a speed by integrating, of the obtained accelerations, accelerations obtained in a certain period, and to detect twisting of the housing from the speed.

公开(公告)号：US20180099391A1

公开(公告)日：2018-04-12

申请号：US15723587

申请日：2017-10-03

Applicant: MAKITA CORPORATION

Inventor： Ryo UMEMOTO ,  Hirokatsu YAMAMOTO ,  Kunihisa SHIMA

IPC: B25D11/00 ,  B25D16/00

CPC classification number: B25D11/005 ,  B25D16/00 ,  B25D2216/0023 ,  B25D2216/0084 ,  B25D2217/0057 ,  B25D2222/72 ,  B25D2250/095 ,  B25D2250/221 ,  B25D2250/265 ,  B25F5/00

Abstract: An electric power tool of one aspect of the present disclosure includes a housing, a motor, an output shaft, a first power transmission, a second power transmission, a common sensor, a twisted-motion detector, and a vibration-based load detector. The common sensor detects a motion of the housing and outputs a detection signal indicating the detected motion. The twisted-motion detector detects a twisted-motion of the housing in a circumferential direction of the output shaft based on the detection signal. The vibration-based load detector detects a vibration of the housing in an axial direction of the output shaft based on the detection signal and detects a load on the output shaft based on the detected vibration.

公开(公告)号：US20180092297A1

公开(公告)日：2018-04-05

申请号：US15724308

申请日：2017-10-04

Applicant: MAKITA CORPORATION

Inventor： Ryo SUNAZUKA ,  Yuji TAKAHASHI ,  Hirokatsu YAMAMOTO ,  Kouichi TAKEDA ,  Shinya KOJIMA

IPC: A01D34/00 ,  G01P15/18 ,  G01P15/135

CPC classification number: A01D34/006 ,  A01D34/416 ,  A01D34/4167 ,  A01D34/68 ,  A01D34/78 ,  A01D34/828 ,  A01D34/90 ,  A01D2034/6843 ,  A01D2101/00 ,  G01P15/0891 ,  G01P15/135 ,  G01P15/18

Abstract: A working machine according to one aspect of the present disclosure includes a main body portion, a driving device, a working tool, a grip portion and a determiner. The grip portion is attached to the main body portion and configured to be held by a user of the working machine. The determiner is configured to determine an abnormal state of the working machine when a couple moment received by the user through the grip portion exceeds a couple threshold. The couple threshold is 200 N·m per 50 ms.

公开(公告)号：US20170060471A1

公开(公告)日：2017-03-02

申请号：US15244130

申请日：2016-08-23

Applicant: MAKITA CORPORATION

Inventor： Hirokatsu YAMAMOTO ,  Yoshitaka ICHIKAWA

IPC: G06F3/06 ,  G05B19/042

Abstract: A work apparatus in one aspect of the present disclosure comprises a control unit, a volatile memory and a rewritable non-volatile memory. The control unit comprises an update processing unit and a writing processing unit. The writing processing unit writes history information in the volatile memory into the non-volatile memory when the writing processing unit predicts a suspension of supply of an electric power to the control unit.

Abstract translation: 本公开的一个方面的工作装置包括控制单元，易失性存储器和可重写非易失性存储器。 控制单元包括更新处理单元和写入处理单元。 当写入处理单元预测向控制单元提供电力的暂停时，写入处理单元将历史信息写入到易失性存储器中。

公开(公告)号：US20150122523A1

公开(公告)日：2015-05-07

申请号：US14534418

申请日：2014-11-06

Applicant: MAKITA CORPORATION

Inventor： Hirokatsu YAMAMOTO ,  Takaaki OSADA ,  Manabu SUGIMOTO

IPC: B25F5/00

CPC classification number: B25F5/001 ,  B23B45/008 ,  B25B21/008 ,  B25B23/0064 ,  B25B23/141 ,  B25B23/147

Abstract: It is an object of the invention to provide a technique for enhancing the operability of a power tool.A representative screwdriver 100 is provided which has a motor 110 and a driving mechanism 120. The driving mechanism 120 has a rotation transmitting mechanism including a driving cam 137 and a driven cam 157, and a cam engagement state is switched by movement of the spindle 150 in a longitudinal direction of the spindle. The position of the spindle 150 in the longitudinal direction is detected by a detecting mechanism 162 that is disposed on the opposite side of the rotation transmitting mechanism from a front end region in the longitudinal direction of the spindle 150. A controller 180 controls the rotation speed of the motor 110 based on the detection result of the detecting mechanism 162 and drives the motor 110.

Abstract translation: 本发明的目的是提供一种用于增强电动工具的可操作性的技术。 提供了具有马达110和驱动机构120的代表性的螺丝刀100.驱动机构120具有包括驱动凸轮137和从动凸轮157的旋转传递机构，并且通过主轴150的移动来切换凸轮接合状态 在主轴的纵向上。 主轴150在纵向上的位置由检测机构162检测，该检测机构162从主轴150的纵向方向上的前端区域设置在旋转传递机构的相对侧上。控制器180控制旋转速度 基于检测机构162的检测结果，驱动电动机110。