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1. 发明专利

JP2010260152A Electric power tool 有权
标题翻译：电动工具
公开(公告)号：JP2010260152A
公开(公告)日：2010-11-18
申请号：JP2009114609
申请日：2009-05-11
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： SHOJI JUNICHI , TAKEDA TAKESHI , KOMURO YOSHIHIRO , KIJIMA YUJI , KAWABATA YASUO
IPC分类号： B25F5/00 , B25F5/02
CPC分类号： B25F5/008 , H02K7/145 , H02K11/33 , H02K2211/03
摘要： PROBLEM TO BE SOLVED: To provide an electric power tool having a reduced mounting space of an inverter circuit board in a body housing part.
SOLUTION: A mounting surface of a semiconductor switching element 3a mounted to the inverter circuit board 3 is disposed so as to face a first bearing part 23, and first groups Q1-Q4 of a plurality of semiconductor switching elements 3a mounted on the mounting surface of the inverter circuit board 3 are mounted adjacent to the first bearing part 23 so as to have the height Hb exceeding the separation distance Ha from the mounting surface to the first bearing part 23 in a space part in the body housing part 1a between the mounting surface and the one end part of the inverter circuit board 3.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有减小的逆变器电路板在主体外壳部分中的安装空间的电动工具。解决方案：安装在逆变器电路板3上的半导体开关元件3a的安装表面设置成面对第一轴承部分23，并且安装在第一轴承部分23上的多个半导体开关元件3a的第一组Q1-Q4 逆变器电路板3的安装面与第一轴承部23相邻地安装，从而在主体容纳部1a的空间部中具有超过距安装面至第一轴承部23的间隔距离Ha的高度Hb，变频器电路板3的安装面和一端部。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010214518A Power tool 有权
标题翻译：电动工具
公开(公告)号：JP2010214518A
公开(公告)日：2010-09-30
申请号：JP2009063645
申请日：2009-03-16
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： TAKEDA TAKESHI , KIJIMA YUJI , IWATA KAZUTAKA , MASUKO HIROSHIKI , KOMURO YOSHIHIRO
IPC分类号： B25F5/00
摘要： PROBLEM TO BE SOLVED: To provide a power tool improved in heat radiation characteristics of an inverter circuit board to be stably operated.
SOLUTION: In the power tool including switching elements 7 for driving a brushless motor 3, the circuit board 6 where the switching elements 7 are mounted, and a power transmitting part for rotating a tip end tool by transmitting the revolving force of the motor 3, the circuit board 6 is fixed to the motor 3 and a heat radiation member 8 is disposed on the circuit board 6 through an insulating material 18 with good thermal conductivity. The heat radiation member 8 is a large plate-like metal covering an entire area of the circuit board 6 where the switching elements 7 are mounted. An upper part of the heat radiation member 8 is folded back and connected to a stator 3c of the motor 3.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够稳定地操作的逆变器电路板的散热特性提高的电动工具。解决方案：在包括用于驱动无刷电动机3的开关元件7的电动工具中，安装有开关元件7的电路板6和用于通过传递转子元件7的旋转力来旋转末端工具的动力传递部件马达3，电路板6固定在马达3上，散热构件8通过具有良好导热性的绝缘材料18布置在电路板6上。散热构件8是覆盖安装开关元件7的电路板6的整个区域的大的板状金属。散热构件8的上部被折回并连接到电动机3的定子3c。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2010058182A Power tool 有权
标题翻译：电动工具
公开(公告)号：JP2010058182A
公开(公告)日：2010-03-18
申请号：JP2008223899
申请日：2008-09-01
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： TAKEDA TAKESHI , KOMURO YOSHIHIRO
IPC分类号： B25F5/00 , H02K11/00
摘要： PROBLEM TO BE SOLVED: To provide a power tool which solves such a problem that it is troublesome to attach a screw and the strength of a switching element is small. SOLUTION: In the power tool, the strength of a switching element is improved and the switching element, a circuit board and a cooling fin are easily mounted by making screws passing through a hole of the switching element, a hole of the cooling fin and a hole of the circuit board common. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种电动工具，其解决了安装螺钉是麻烦的问题，并且开关元件的强度小。解决方案：在电动工具中，提高了开关元件的强度，并且通过使穿过开关元件的孔的螺钉容易地安装开关元件，电路板和冷却翅片，冷却孔翅片和电路板的孔是共同的。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2009196009A Power tool 有权
标题翻译：电动工具
公开(公告)号：JP2009196009A
公开(公告)日：2009-09-03
申请号：JP2008037861
申请日：2008-02-19
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： KOMURO YOSHIHIRO , OMORI KAZUHIRO
IPC分类号： B25F5/02
摘要： PROBLEM TO BE SOLVED: To provide a power tool prevented from coming out of a waist belt in any operation and movement when the power tool is hung on the waist belt, and having a highly safe hanging means not obstructing a worker when the power tool is used. SOLUTION: This power tool comprises a motor serving as a drive source and a housing 2 which stores a body section 4 for storing the motor and a handle grip section 5 formed integrally with the body section 4. A loop clutch holding part 10 attached to the housing 2 comprises a base 11 secured to the housing 2, a cover 13 for securing a loop clutch 9, and a fixing member 14 for fixing the base 11 and the cover 13. The loop clutch 9 is detachable from the cover 13 and rotatable. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：当电动工具悬挂在腰带上时，提供防止在任何操作和运动中从腰带出来的电动工具，并且具有高度安全的悬挂装置，当不能阻碍工人时使用电动工具。解决方案：该电动工具包括用作驱动源的电动机和存储用于存储电动机的主体部分4的壳体2和与主体部分4一体形成的手柄握持部分5.回路离合器保持部分10 附接到壳体2的底座11包括固定到壳体2的底座11，用于固定环形离合器9的盖13和用于固定底座11和盖子13的固定构件14.环形离合器9可从盖13拆卸并可旋转。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2009072892A Power tool 有权
标题翻译：电动工具
公开(公告)号：JP2009072892A
公开(公告)日：2009-04-09
申请号：JP2007246363
申请日：2007-09-24
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： HOSHI TOMOYUKI , OMORI KAZUHIRO , KOMURO YOSHIHIRO , WATABE SHINJI , IWATA KAZUTAKA
IPC分类号： B25B23/14 , B25B21/02
摘要： PROBLEM TO BE SOLVED: To provide a power tool having improved workability by allowing a worker to selectively set change-over between a single-action mode and a continuous-action mode to reduce the frequency of pushing a switch until setting the desired mode.
SOLUTION: The power tool comprises: a motor as a driving source; a motor housing part storing the motor; a handle housing part having one end connected to the motor housing part; a battery provided at the other end of the handle housing part; a spindle to be rotated with the motor; a hammer turnable on the spindle and movable in the axial direction; and an anvil to be hammered and rotated by the hammer. It has the single-action mode in which the hammer hammers the anvil several times and the continuous-action mode in which the hammer continuously hammers the anvil. The first switch for change over between the single-action mode and the continuous-action mode is provided in a housing.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过允许工作人员在单动作模式和连续动作模式之间选择性地设置切换来提供具有改进的可操作性的动力工具，以降低推动开关的频率，直到设置期望的模式。电动工具包括：电动机作为驱动源; 存储马达的马达壳体部分; 手柄壳体部分，其一端连接到电动机壳体部分; 设置在所述手柄壳体部的另一端的电池; 与电机一起旋转的主轴; 主轴可旋转并可沿轴向移动的锤; 和锤子敲击和旋转的砧座。它具有锤击铁砧多次的单动作模式，锤子连续锤击砧座的连续动作模式。在单个动作模式和连续动作模式之间切换的第一开关设置在壳体中。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2008272869A Power tool 有权
标题翻译：电动工具
公开(公告)号：JP2008272869A
公开(公告)日：2008-11-13
申请号：JP2007118834
申请日：2007-04-27
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： YOSHIDA KENICHIRO , OMORI KAZUHIRO , KOMURO YOSHIHIRO
IPC分类号： B25F5/00
摘要： PROBLEM TO BE SOLVED: To provide a power tool capable of preventing increase of the number of parts and cost to provide a compact configuration, cooling a stator and a circuit substrate efficiently, improving a vibration control function of a brushless motor, and achieving a satisfactory dustproof function.
SOLUTION: An insulating member 81 having a stator covering part 81A for insulating teeth 34 and a coil 32 from each other by covering the teeth 34 and an annular part forming a female screw hole is held on a rear end side of the stator 31 by winding the coil 32 around it. The circuit substrate 40 is fixed to let a front face 40A of the circuit substrate 40 adhere closely to the insulating member 81 by screw-fitting a male screw 90 into the female screw hole to cover the whole annular opening formed by an end face of the annular part of the insulating member 81. The front face 40A of the circuit substrate 40 is provided with a Hall element 41 for detecting a rotation position of a rotor 33, and a rear face 40B of the circuit substrate 40 is provided with an FET 42 being a switching element.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够防止部件数量增加和提供紧凑结构的成本的电动工具，有效地冷却定子和电路基板，改善无刷电动机的振动控制功能，以及达到令人满意的防尘功能。解决方案：具有用于绝缘齿34的定子覆盖部分81A和通过覆盖齿34彼此的线圈32和形成阴螺纹孔的环形部分的绝缘构件81被保持在定子的后端侧 31绕线圈32绕线圈32。电路基板40被固定，使得电路基板40的正面40A通过将外螺纹90螺合到内螺纹孔中而与绝缘构件81紧密接合，以覆盖由螺纹孔的端面形成的整个环形开口绝缘构件81的环状部分。电路基板40的前表面40A设置有用于检测转子33的旋转位置的霍尔元件41，并且电路基板40的后表面40B设置有FET 42 作为开关元件。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2014176952A Impact tool 有权
标题翻译： IMPACT工具
公开(公告)号：JP2014176952A
公开(公告)日：2014-09-25
申请号：JP2013204134
申请日：2013-09-30
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： UCHIDA HIROKI , NAKANO YOSHIHIRO , KOMURO YOSHIHIRO , HARADA TETSUSUKE , TANIMOTO HIDEYUKI , NISHIKAWA TOMOMASA
IPC分类号： B25B21/02
摘要： PROBLEM TO BE SOLVED: To provide an impact tool capable of reducing whole length of an anvil and capable of achieving down-sizing.SOLUTION: An anvil 52 is supported by a spindle 41 so as to rotate coaxially by fitting of a fitting hole 41c formed on a front end of the spindle 41 and a fitting shaft 52b formed in a projecting manner on a rear end of the anvil 52. On a metal 54, a ring-shaped inner peripheral oil groove 54e is formed on a slide surface between the anvil 52 and the metal 54, and an oil supply passage (a collar part oil groove 53d of a hammer case 53, an outer peripheral oil groove 54e of the metal 54, and an oil hole 54f) for supplying grease from the rear end side of the metal 54 to an inner peripheral oil groove 54c is also formed.
摘要翻译：要解决的问题：提供一种能够减小砧座的整个长度并能够实现小型化的冲击工具。解决方案：砧座52由心轴41支撑，以便通过形成的装配孔41c的装配同轴地旋转在主轴41的前端上以突出的方式形成在砧座52的后端上的装配轴52b。在金属54上，环形内周油槽54e形成在砧座之间的滑动面上 52和金属54，以及用于从后端侧供给润滑脂的供油通路（锤壳53的轴环部分油槽53d，金属54的外周油槽54e和油孔54f）金属54也形成在内周油槽54c上。

8. 发明专利

JP2014151421A Impact tool 有权
标题翻译： IMPACT工具
公开(公告)号：JP2014151421A
公开(公告)日：2014-08-25
申请号：JP2013025471
申请日：2013-02-13
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： UCHIDA HIROKI , NAKANO YOSHIHIRO , KOMURO YOSHIHIRO , HARADA TETSUSUKE , TANIMOTO HIDEYUKI
IPC分类号： B25B21/02
摘要： PROBLEM TO BE SOLVED: To provide an impact tool capable of shortening the full length of an anvil and being downsized.SOLUTION: An impact driver 1 includes: a spindle 41 rotated by a motor 3; a hammer 51 supported by the spindle 41 so as to be movable in a front-to-back direction; an anvil 52 supported so as to be rotatable substantially coaxially with respect to the spindle 41, and provided with an attachment hole 52a, at a front end, into which a tip tool is attached; and an impact mechanism 5 for transmitting rotation of the spindle 41 from a claw part 51a of the hammer 51 to a blade part 52c of the anvil 52, as rotary impact force. Fitting a fitting shaft 52b formed so as to protrude at a rear end of the anvil 52, into a fitting hole 41c formed at a front end of the spindle 41 makes the anvil 52 be supported by the spindle 41 so as to be rotatable substantially coaxially, and the front end of the spindle 41 is located ahead of a rear end of the blade part 52c of the anvil 52.
摘要翻译：要解决的问题：提供能够缩短砧座的全长并且被小型化的冲击工具。解决方案：冲击驱动器1包括：由电动机3旋转的主轴41; 由主轴41支撑以能够在前后方向上移动的锤51; 砧座52被支撑成可相对于主轴41基本上同轴地旋转，并且在前端设置有附接孔52a，尖端工具附接到该安装孔52a; 以及用于将心轴41的旋转从锤51的爪部51a传递到砧座52的刀片部52c的冲击机构5作为旋转冲击力。将形成为在砧座52的后端突出的装配轴52b配合到形成在心轴41的前端的嵌合孔41c中，使得砧座52被主轴41支撑以能够大致同轴地旋转并且心轴41的前端位于砧座52的叶片部分52c的后端的前方。

9. 发明专利

JP2014121765A Impact tool 有权
标题翻译： IMPACT工具
公开(公告)号：JP2014121765A
公开(公告)日：2014-07-03
申请号：JP2012280363
申请日：2012-12-22
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： IWATA KAZUTAKA , KOMURO YOSHIHIRO
IPC分类号： B25B21/02
CPC分类号： B25B21/02 , B25B21/026 , B25B23/1475
摘要： PROBLEM TO BE SOLVED: To provide an impact tool capable of fastening at high speed with high accuracy even a small screw or a pan head screw.SOLUTION: The impact tool comprises: a motor; control means for controlling driving power supplied to the motor by using a semiconductor switching element; and a striking mechanism for driving a tip end tool continuously or intermittently by rotation force of the motor and including a hammer and an anvil. The control means drives the semiconductor switching element at high duty ratio (100%) if a trigger is pulled, and lowers the duty ratio 52 at twhich is immediately before the first striking of the anvil by the hammer and drives the motor so that following striking is performed at low duty ratio (40%). Change of the duty ratio is performed before striking of the hammer and the anvil.
摘要翻译：要解决的问题：提供一种即使是小螺丝或平头螺丝也能以高精度高速紧固的冲击工具。解决方案：冲击工具包括：电机; 控制装置，用于通过使用半导体开关元件来控制提供给电动机的驱动功率; 以及用于通过电动机的旋转力连续地或间歇地驱动末端工具并且包括锤和砧座的打击机构。如果拉动扳机，则控制装置以高占空比（100％）驱动半导体开关元件，并且在锤子第一次敲击砧座之前立即降低两倍的占空比52并驱动电动机使得跟随击打以低占空比进行（40％）。占空比的变化在敲击锤和砧座之前进行。

10. 发明专利

JP2014024166A Power tool and tip tool 审中-公开
标题翻译：电动工具和提示工具
公开(公告)号：JP2014024166A
公开(公告)日：2014-02-06
申请号：JP2012167290
申请日：2012-07-27
申请人： Hitachi Koki Co Ltd , 日立工機株式会社
发明人： KOMURO YOSHIHIRO , NAKANO YOSHIHIRO
IPC分类号： B25B21/00
摘要： PROBLEM TO BE SOLVED: To solve such a problem that when using the same socket for a long period of time in a power tool such as an impact wrench, a fitting part of a square drive of an anvil and a square hole of the socket is worn gradually, so that a connecting pin receives rotational striking force of the anvil, namely, the connecting pin continually receives the rotational striking force to cause the connecting pin to be plastically deformed, and thereby the connecting pin cannot be removed from a through-hole of the socket, resulting in causing a risk that the socket cannot be replaced.SOLUTION: According to a present invention, a material of a connecting pin is formed of an elastic body, and thereby even when the fitting part of the square drive of the anvil and the square hole of a socket is worn out and the rotational striking force is applied to the anvil, the connecting pin is elastically deformed. Consequently, if tightening work of a bolt, etc., is finished and the rotational striking force is not applied, the connecting pin returns to an original shape, and the socket can be replaced.
摘要翻译：要解决的问题为了解决这样一个问题，当在诸如冲击扳手的电动工具中长时间使用相同的插座时，砧座的方形驱动的装配部分和插座的方孔是逐渐磨损，使得连接销接受砧座的旋转打击力，即，连接销不断接收旋转打击力，使连接销塑性变形，从而连接销不能从通孔中移除导致插座不能更换的风险。解决方案：根据本发明，连接销的材料由弹性体形成，从而即使当方形驱动的配合部分砧座和插座的方孔磨损，旋转打击力施加到砧座上，连接销弹性变形。因此，如果螺栓等的紧固工作完成并且不施加旋转打击力，则连接销返回到原来的形状，并且可以更换插座。

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