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1. 发明授权

US10596679B2 Electric tool 有权
公开(公告)号：US10596679B2
公开(公告)日：2020-03-24
申请号：US15568796
申请日：2016-03-25
申请人： HITACHI KOKI CO., LTD.
发明人： Yuuki Takeda , Hironori Sakai
IPC分类号： B24B23/02 , H02K11/33 , H02K7/14 , H02K9/14 , B24B55/00 , B25F5/00 , B25F5/02 , H02K7/116
摘要： Provided is an electric tool in which the risk of short-circuiting between conductive members of multiple installed switching elements has been reduced by providing partitioning plates between the switching elements. An electric tool, which has a motor, an inverter circuit with multiple switching elements for performing switching operations and controlling the driving of the motor, a control unit for controlling switching element on-off operations, and a circuit board on which the switching elements are loaded, is configured so that the circuit board is housed inside a container-shaped case (40) and the circuit board is secured with a partitioning member (50) that is interposed between the multiple switching elements and has partitioning plates (51, 52a, 52b) obtained from an insulating material.

2. 发明申请

US20150231771A1 Power Tool 审中-公开
标题翻译：电动工具
公开(公告)号：US20150231771A1
公开(公告)日：2015-08-20
申请号：US14399708
申请日：2013-07-19
申请人： Hitachi Koki Co., Ltd.
发明人： Hironori Sakai , Naoki Tadokoro
IPC分类号： B25B21/02
CPC分类号： B25B21/026 , B25B21/02
摘要： A power tool includes a housing, a motor, a hammer, an anvil, a detecting unit, and a controller. The motor is accommodated in the housing. The hammer is configured to be rotated by the motor in a rotational direction about a rotational axis extending in an axial direction. The anvil is configured to be rotated upon being struck by the hammer. The detecting unit is configured to detect an impact generated in the rotational direction and the axial direction. The controller is configured to control the motor based on a detection result of the detecting unit.
摘要翻译：电动工具包括壳体，马达，锤子，砧座，检测单元和控制器。电机容纳在外壳中。锤被构造成由马达沿着沿轴向延伸的旋转轴线的旋转方向旋转。砧被构造成在被锤击时旋转。检测单元被配置为检测在旋转方向和轴向方向上产生的冲击。控制器被配置为基于检测单元的检测结果来控制马达。

3. 发明申请

US20150190908A1 Rotational Impact Tool 审中-公开
标题翻译：旋转冲击工具
公开(公告)号：US20150190908A1
公开(公告)日：2015-07-09
申请号：US14399662
申请日：2013-06-03
申请人： Hitachi Koki Co., Ltd.
发明人： Naoki Tadokoro , Hironori Sakai
IPC分类号： B25B21/02
CPC分类号： B25B21/02 , B25B21/026
摘要： A rotational impact tool including: a motor; a spindle; a hammer; a first resilient member; and an anvil. The motor generates a drive force. The spindle rotates in a rotating direction upon transmission of the drive force from the motor. The spindle has an axis extending in an axial direction that includes a first direction and a second direction opposite to the first direction. The hammer moves in the rotational direction and in the axial direction relative to the spindle to generate a rotational impact force. The first resilient member urges the hammer in the first direction. The anvil transmits the rotational impact force to an end bit. The rotational impact tool further includes a second resilient member. The second resilient member is disposed at a position radially outward of the first resilient member and is configured to abut the hammer when the hammer moves in the second direction.
摘要翻译：一种旋转冲击工具，包括：电动机; 主轴; 一个锤子; 第一弹性构件; 和砧座。电机产生驱动力。当传动来自马达的驱动力时，主轴沿旋转方向旋转。主轴具有沿轴向延伸的轴线，该轴线包括第一方向和与第一方向相反的第二方向。锤子相对于心轴沿旋转方向和轴向移动以产生旋转冲击力。第一弹性构件沿第一方向推动锤。砧座将旋转冲击力传递到终端。旋转冲击工具还包括第二弹性构件。第二弹性构件设置在第一弹性构件的径向外侧的位置处，并且构造成当锤沿第二方向移动时抵靠锤。

4. 发明申请

US20150047866A1 ELECTRIC TOOL AND FASTENING METHOD USING THE SAME 审中-公开
标题翻译：使用该工具的电动工具和紧固方法
公开(公告)号：US20150047866A1
公开(公告)日：2015-02-19
申请号：US14384980
申请日：2013-03-29
申请人： HITACHI KOKI CO., LTD.
发明人： Hironori Sakai , Naoki Tadokoro , Kazutaka Iwata
IPC分类号： B25F5/00 , B25B21/02
CPC分类号： B25F5/001 , B25B21/02 , B25F5/00
摘要： An electric tool in which a pulsating input voltage is configured to be supplied to a drive circuit of a motor, the electric tool including: a rotation speed detection unit configured to detect a rotation speed of the motor, characterized in that the electric tool further includes: a control part configured to vary a determining value for determining whether the rotation speed of the motor satisfies a predetermined condition or not, so as to be synchronous with a pulsation cycle of the input voltage supplied to the drive circuit.
摘要翻译：一种电动工具，其中脉动输入电压被配置为提供给电动机的驱动电路，所述电动工具包括：转速检测单元，被配置为检测所述电动机的转速，其特征在于，所述电动工具还包括：控制部，被配置为改变用于确定电机的转速是否满足预定条件的确定值，以便与提供给驱动电路的输入电压的脉动周期同步。

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