公开(公告)号：US20110214894A1

公开(公告)日：2011-09-08

申请号：US12991415

申请日：2009-05-08

申请人： Tetsuhiro Harada ,  Tomomasa NIshikawa ,  Kazutaka Iwata ,  Shinki Ohtsu ,  Nobuhiro Takano

发明人： Tetsuhiro Harada ,  Tomomasa NIshikawa ,  Kazutaka Iwata ,  Shinki Ohtsu ,  Nobuhiro Takano

IPC分类号： B25F5/00 ,  B25B21/02

CPC分类号： B25B21/02

摘要： According to an aspect of the invention, an oil pulse tool includes: a motor generating a driving force according to a driving voltage; an oil pulse unit driven by the driving force and generating a torque in a pulse-like shape when the motor passes a strike position on a shaft thereof; and an output shaft on which a front end tool is mounted, the output shaft being connected to the shaft, characterized in that the oil pulse tool further comprises driving adjusting means to control the driving voltage, the driving voltage is reduced during a given period including a timing when the torque is transmitted to the output shaft, and the reduced driving voltage is increased when the given period is finished.

摘要翻译： 根据本发明的一个方面，油压脉冲工具包括：电动机，根据驱动电压产生驱动力; 由驱动力驱动的油压脉冲单元，当马达通过其轴上的击打位置时产生脉冲状的扭矩; 以及输出轴，其上安装有前端工具，所述输出轴连接到所述轴，其特征在于，所述油压脉冲工具还包括用于控制驱动电压的驱动调节装置，在给定时段期间驱动电压降低，包括 当扭矩传递到输出轴的时刻，并且当给定的时间段结束时，降低的驱动电压增加。

公开(公告)号：US20100244592A1

公开(公告)日：2010-09-30

申请号：US12530200

申请日：2008-06-17

申请人： Katsuhiro Oomori ,  Yoshihiro Komuro ,  Kenichirou Yoshida ,  Kazutaka Iwata

发明人： Katsuhiro Oomori ,  Yoshihiro Komuro ,  Kenichirou Yoshida ,  Kazutaka Iwata

IPC分类号： H02K7/14 ,  H02K9/06 ,  H02K11/04

CPC分类号： B25F5/008 ,  H02K5/20 ,  H02K7/145 ,  H02K9/06

摘要： According to an aspect of the present invention, there is provided a power tool including: a housing having a suction port formed thereon to introduce an cooling air from an outside of the housing; and a brushless motor that is housed in the housing and has an electric circuit, the electric circuit having a heat radiating surface, wherein the heat radiating surface is disposed in a neighborhood of the suction port.

摘要翻译： 根据本发明的一个方面，提供了一种动力工具，包括：壳体，其上形成有用于从壳体的外部引入冷却空气的吸入口; 以及容纳在所述壳体中并具有电路的无刷电动机，所述电路具有散热面，所述散热面配置在所述吸入口附近。

公开(公告)号：US20100096155A1

公开(公告)日：2010-04-22

申请号：US12530621

申请日：2008-09-19

申请人： Kazutaka Iwata ,  Shinji Watanabe ,  Nobuhiro Takano

发明人： Kazutaka Iwata ,  Shinji Watanabe ,  Nobuhiro Takano

IPC分类号： B25B21/02 ,  B23Q5/10

CPC分类号： B25B21/02 ,  B25B23/1475

摘要： An impact tool (100) includes a spindle (11), a motor (1), a rotational impact system (10), a current detecting unit (32), and a current control unit (31). The spindle extends in an axial direction thereof. The motor provides the spindle with a rotational power in accordance with a motor current flowing therethrough. The rotational power rotates the spindle about the axis at an rpm value. The rotational impact system provides the spindle with an impact force in the axial direction, thereby transmitting both the rotational power and the impact force to an end bit. The current detecting unit detects a current value of the motor current. The current control unit reduces the current value if the current value detected by the current detecting unit exceeds a predetermined value.

摘要翻译： 冲击工具（100）包括主轴（11），马达（1），旋转冲击系统（10），电流检测单元（32）和电流控制单元（31）。 主轴在其轴向方向上延伸。 电动机根据流过其中的电动机电流向主轴提供旋转动力。 旋转动力使转轴围绕轴线以rpm值旋转。 旋转冲击系统为主轴提供沿轴向的冲击力，从而将旋转动力和冲击力两者传递到终点。 电流检测单元检测电动机电流的当前值。 如果由电流检测单元检测到的电流值超过预定值，则电流控制单元减小电流值。