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1. 发明授权

US11052530B2 Electric work machine 有权
公开(公告)号：US11052530B2
公开(公告)日：2021-07-06
申请号：US15523358
申请日：2015-09-29
申请人： HITACHI KOKI CO., LTD.
发明人： Akira Matsushita , Tomomasa Nishikawa , Yuta Noguchi , Kuniaki Kanbe , Shingo Yamazaki
IPC分类号： B25F5/00 , H02K11/33 , H02K9/06 , H02P6/16
摘要： Provided is an electric work machine that can suppress a temperature increase of a component controlling an electric motor. The electric work machine including a brushless motor that operates a tip tool includes a rectification circuit that converts a voltage to be applied to the brushless motor from an alternating current voltage to a direct current voltage, and a switching circuit that controls the brushless motor, and the rectification circuit is arranged upstream of the switching circuit in a circulation path of the air that cools the rectification circuit and the switching circuit.

2. 发明授权

US09970445B2 Portable blower 有权
公开(公告)号：US09970445B2
公开(公告)日：2018-05-15
申请号：US14416480
申请日：2013-08-19
申请人： HITACHI KOKI CO., LTD.
发明人： Seiichi Kodato , Mizuho Nakamura , Tomomasa Nishikawa , Kouji Sagawa
IPC分类号： A47L5/14 , F04D25/08 , A47L9/22 , A47L9/28 , A01G1/12 , F04D19/00 , F04D25/06 , F04D29/056 , F04D29/32 , F04D29/52 , F04D29/58 , F04D29/66
CPC分类号： F04D25/082 , A01G20/43 , A47L5/14 , A47L9/22 , A47L9/2884 , F04D19/002 , F04D25/0673 , F04D29/056 , F04D29/325 , F04D29/522 , F04D29/5806 , F04D29/5813 , F04D29/663
摘要： To provide a portable blower having excellent battery heat radiating properties.A battery mounting portion projects convexly into an air passage. Outer surfaces of a bottom surface section and side surface sections of the battery mounting portion form part of an inner surface of the air passage. The battery mounting portion holds a battery pack at an attitude that a center of gravity of the battery pack is as close to a handle portion as possible. Specifically, the battery mounting portion holds the battery pack in such a manner that the greatest surface of the battery pack having a substantially cubic shape faces the handle portion. The battery mounting portion holds the battery pack in such a manner that a longitudinal direction of the battery pack faces the air passage.

3. 发明授权

US09869327B2 Portable blower 有权
公开(公告)号：US09869327B2
公开(公告)日：2018-01-16
申请号：US13967622
申请日：2013-08-15
申请人： HITACHI KOKI CO., LTD.
发明人： Seiichi Kodato , Mizuho Nakamura , Tomomasa Nishikawa , Kouji Sagawa
IPC分类号： F04D29/52 , F04D25/06 , F04D29/64 , A47L5/14 , F04D29/54 , A01G1/12
CPC分类号： F04D29/522 , A01G20/43 , A47L5/14 , F04D25/0673 , F04D25/068 , F04D29/541 , F04D29/646
摘要： A brushless motor is incorporated in one of divided constituent members of a motor casing which is disassembled, and then, the divided constituent members of the motor casing which is disassembled are connected to each other into the motor casing assembled with mgachine screws screwed into machine screw holes. As this occurs, when a wiring of the brushless motor is held by a first stationary blade portion and a second stationary blade portion, the wiring is allowed to lead to an outside of an outer cylindrical portion through a gap defined between the first stationary blade portion and the second stationary blade portion.

4. 发明申请

US20140049204A1 ELECTRIC WORKING MACHINE 有权
标题翻译：电动机
公开(公告)号：US20140049204A1
公开(公告)日：2014-02-20
申请号：US13967937
申请日：2013-08-15
申请人： HITACHI KOKI CO., LTD.
发明人： Tatsuya Ito , Mizuho Nakamura , Yoshio Iimura , Tomomasa Nishikawa
IPC分类号： H02P7/14
CPC分类号： H02P7/14 , H02P7/285
摘要： An electric working machine including: an input part; a control unit configured to control a motor in accordance with an operation amount of the input part; and a switching part; wherein, when a predetermined operation is performed to the switching part, the control unit shifts to a fixed control mode in which the motor is controlled in accordance with an operation amount of the input part at the time when the predetermined operation is performed to the switching part, irrespective of an operation amount of the input part after the predetermined operation is performed to the switching part.
摘要翻译：一种电动加工机，包括：输入部; 控制单元，被配置为根据所述输入部的操作量来控制电动机; 和切换部分; 其特征在于，当对所述切换部进行了规定的动作时，所述控制部转换为在对所述切换进行所述规定动作时，根据所述输入部的操作量来控制所述电动机的固定控制模式不管在对切换部分执行预定操作之后输入部分的操作量如何。

5. 发明申请

US20130255982A1 POWER TOOL 审中-公开
标题翻译：电动工具
公开(公告)号：US20130255982A1
公开(公告)日：2013-10-03
申请号：US13769148
申请日：2013-02-15
申请人： HITACHI KOKI CO., LTD.
发明人： Shigeru Takahashi , Katsuhiro Oomori , Tomomasa Nishikawa
IPC分类号： B25F5/00
CPC分类号： B25F5/001 , B25B21/02
摘要： A power tool, in which a case that is connected to a housing and the case houses a reducer mechanism that decelerates an output of an electric motor and an impact mechanism that transmits an output of the reducer mechanism to a tip tool, is provided. The power tool further includes an inner cover that covers an opening of the case, a ring gear included in the reducer mechanism, a spindle that is rotatably supported by a bearing, and a space portion that is placed between the inner cover and the ring gear and in a periphery of the bearing, and capable of stocking grease. A through hole, which communicates with the inside and outside of the case through the space portion, is formed in the inner cover.
摘要翻译：一种电动工具，其中连接到壳体的壳体和壳体容纳有使电动机的输出减速的减速机构和将减速机构的输出传递到尖端工具的冲击机构。动力工具还包括覆盖壳体的开口的内盖，包括在减速机构中的环形齿轮，由轴承可旋转地支撑的主轴和放置在内盖和齿圈之间的空间部分并且在轴承的周边，并且能够放置润滑脂。在内盖中形成有通过空间部与壳体的内部和外部连通的通孔。

6. 发明授权

US10442066B2 Driver 有权
公开(公告)号：US10442066B2
公开(公告)日：2019-10-15
申请号：US15507279
申请日：2015-08-21
申请人： Hitachi Koki Co., Ltd.
发明人： Tomomasa Nishikawa , Yoshiichi Komazaki , Tetsuhiro Harada , Norikazu Baba
IPC分类号： B25C5/10 , B25C1/06 , B25C7/00 , B25C1/00
摘要： In order to provide a driver for reducing reaction generated to a driver main body, the driver 1 includes a nose portion 3 provided in a housing 2 and extending in a longitudinal direction, the nose portion being configured to allow a fastener to pass therethrough, a plunger 7 configured to move in an impact direction parallel to the longitudinal direction to impact the fastener through the nose portion, a weight 8, and a coil spring 9 configured to be compressed by a motor 5 in the longitudinal direction. a release of the compression causing the plunger 7 to move in the impact direction, while causing the weight 8 to move in a counter-impact direction which is away from the plunger 7. The coil spring 9 is provided between the plunger 7 and the weight 8. The coil spring has one end portion urging the plunger 7, and another end portion urging the weight 8.

7. 发明申请

US20150050169A1 HIGH-PRESSURE WASHING DEVICE 审中-公开
标题翻译：高压洗涤装置
公开(公告)号：US20150050169A1
公开(公告)日：2015-02-19
申请号：US14372271
申请日：2013-02-13
申请人： Hitachi Koki Co., Ltd.
发明人： Noriyuki Horie , Junichi Kamimura , Shinichirou Satou , Tomomasa Nishikawa
IPC分类号： B08B3/02
CPC分类号： B08B3/026 , B05B9/0413 , B05B9/043 , B05B9/0861 , B08B2203/0223 , F04B9/045 , F04B17/03
摘要： A high-pressure washing device includes a nozzle (31), a motor (562) a battery (7), and a pump (576). The nozzle (31) is configured to eject a high-pressure cleaning liquid. The battery (7) is configured to supply electric power to the motor (562). The pump (576) is configured to be driven by the motor (562) to eject the cleaning liquid from the nozzle (31). An ejection pressure of the cleaning liquid from the nozzle (31) is set to more than or equal to 3 Mpa.
摘要翻译：高压洗涤装置包括喷嘴（31），马达（562），电池（7）和泵（576）。喷嘴31构成为喷出高压清洗液。电池（7）构成为向电动机（562）供给电力。泵（576）构造成由电动机（562）驱动以从喷嘴（31）喷射清洗液体。来自喷嘴（31）的清洗液的喷射压力设定为大于或等于3Mpa。

8. 发明申请

US20130245789A1 ELECTRIC TOOL AND DATA TRANSMISSION METHOD 审中-公开
标题翻译：电动工具和数据传输方法
公开(公告)号：US20130245789A1
公开(公告)日：2013-09-19
申请号：US13760562
申请日：2013-02-06
申请人： HITACHI KOKI CO., LTD.
发明人： Yoshio Iimura , Hironori Mashiko , Tomomasa Nishikawa , Tatsuya Ito
IPC分类号： G05B11/01
CPC分类号： G05B11/01 , B25B21/00 , G07C3/08
摘要： An electric tool includes a motor, a light having a function in addition to a data transmission, a switch configured to switch power supply to the light in accordance with a user operation; and a control unit. Upon a switch is switched from OFF to ON, the light is blinked at a frequency above the human-sensible range on the basis of data such as the usage history data of the electric tool. An average of the blinking frequency of the light is approximately 4,800 Hz when a bit rate is set to 9,600 bps, for example. Further, an average of a duty ratio of a drive signal of the light during blinking is approximately 50%.
摘要翻译：电动工具包括电动机，具有除了数据传输功能之外的功能的光，根据用户操作将开关电源切换到开关的开关; 和控制单元。当开关从OFF切换到ON时，基于诸如电动工具的使用历史数据的数据，以高于人体敏感范围的频率闪烁指示灯。例如，当比特率设置为9600bps时，光的闪烁频率的平均值为大约4,800Hz。此外，闪烁期间的光的驱动信号的占空比的平均值为大约50％。

9. 发明授权

US09940813B2 Abnormality reporting system and electric tool, and communication terminal 有权
公开(公告)号：US09940813B2
公开(公告)日：2018-04-10
申请号：US15116360
申请日：2015-01-09
申请人： HITACHI KOKI CO., LTD.
发明人： Tomomasa Nishikawa , Takuya Konnai , Tatsuya Ito
IPC分类号： G08B21/18 , B25F5/00
CPC分类号： G08B21/18 , B25F5/00 , G05B2219/24011
摘要： A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal 100 includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools 10, 200, 300, and 400 based on information acquired from the electric tools 10, 200, 300, and 400 via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools 10, 200, 300, and 400, the occurrence of abnormality in the electric tool 10, 200, 300, or 400 is reported by at least one of a report unit included in the electric tools 10, 200, 300, and 400 other than the electric tool 10, 200, 300, or 400 in which the occurrence of abnormality is determined and a report unit included in the communication terminal 100.

10. 发明申请

US20150211535A1 PORTABLE BLOWER 有权
标题翻译：便携式鼓风机
公开(公告)号：US20150211535A1
公开(公告)日：2015-07-30
申请号：US14416480
申请日：2013-08-19
申请人： HITACHI KOKI CO., LTD.
发明人： Seiichi Kodato , Mizuho Nakamura , Tomomasa Nishikawa , Kouji Sagawa
IPC分类号： F04D25/08 , F04D25/06 , F04D29/66 , F04D29/32 , F04D29/52 , F04D29/58 , F04D19/00 , F04D29/056
CPC分类号： F04D25/082 , A01G20/43 , A47L5/14 , A47L9/22 , A47L9/2884 , F04D19/002 , F04D25/0673 , F04D29/056 , F04D29/325 , F04D29/522 , F04D29/5806 , F04D29/5813 , F04D29/663
摘要： A battery mounting portion projects convexly into an air passage. Outer surfaces of a bottom surface section and side surface sections of the battery mounting portion form part of an inner surface of the air passage. The battery mounting portion holds a battery pack at an attitude that a center of gravity of the battery pack is as close to a handle portion as possible. Specifically, the battery mounting portion holds the battery pack in such a manner that the greatest surface of the battery pack having a substantially cubic shape faces the handle portion. The battery mounting portion holds the battery pack in such a manner that a longitudinal direction of the battery pack faces the air passage.
摘要翻译：电池安装部分凸出地突出到空气通道中。电池安装部分的底表面部分和侧表面部分的外表面形成空气通道内表面的一部分。电池安装部分以电池组的重心尽可能靠近手柄部分的姿态保持电池组。具体地，电池安装部分以这样的方式保持电池组，使得具有基本立方体形状的电池组的最大表面面向把手部分。电池安装部以使电池组的纵向朝向空气通道的方式保持电池组。

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