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1. 发明授权

US07410009B2 Power tool 有权
标题翻译：电动工具
公开(公告)号：US07410009B2
公开(公告)日：2008-08-12
申请号：US11444375
申请日：2006-06-01
申请人： Toshiro Hirayama , Kenji Shibata , Takuo Arakawa , Yonosuke Aoki
发明人： Toshiro Hirayama , Kenji Shibata , Takuo Arakawa , Yonosuke Aoki
IPC分类号： B25F5/00
CPC分类号： B25F5/00 , B25D2250/185
摘要： It is an object of the present invention to provide an improved technique for preventing leakage of lubricant from an accommodating space that houses a driving mechanism, while regulating the internal pressure of the accommodating space in a power tool. A representative power tool includes a power tool body, a tool bit, a driving mechanism, a lubricant, an accommodating space, a passage and a lubricant leakage preventing region. The accommodating space is disposed in the body to house the driving mechanism and is hermetically sealed. The passage has an accommodating space side opening and an outside opening. The passage extends, starting from the accommodating space side opening, in a direction away from the outside opening. Then, the passage turns around and extends toward the outside opening. Further, the lubricant leakage preventing region is provided with the passage to prevent the lubricant from leaking from the inside to the outside of the accommodating space.According to the invention, the length of the passage can be made longer and the lubricant must travel a longer distance before leaking out. Therefore, a higher effect of preventing leakage can be obtained.
摘要翻译：本发明的目的是提供一种用于防止润滑剂从容纳驱动机构的容纳空间泄漏的改进技术，同时调节电动工具中的容纳空间的内部压力。代表性的电动工具包括动力工具主体，工具钻头，驱动机构，润滑剂，容纳空间，通道和润滑剂泄漏防止区域。容纳空间设置在主体中以容纳驱动机构并被密封。通道具有容纳空间侧开口和外部开口。通道从容纳空间侧开口开始沿远离外部开口的方向延伸。然后，通道转向并向外侧开口延伸。此外，润滑剂泄漏防止区域设置有通道，以防止润滑剂从容纳空间的内部泄漏到外部。根据本发明，可以使通道的长度更长，并且在泄漏之前润滑剂必须行进更长的距离。因此，可以获得更高的防止泄漏的效果。

2. 发明申请

US20060272836A1 Power tool 有权
标题翻译：电动工具
公开(公告)号：US20060272836A1
公开(公告)日：2006-12-07
申请号：US11444375
申请日：2006-06-01
申请人： Toshiro Hirayama , Kenji Shibata , Takuo Arakawa , Yonosuke Aoki
发明人： Toshiro Hirayama , Kenji Shibata , Takuo Arakawa , Yonosuke Aoki
IPC分类号： B25D11/00
CPC分类号： B25F5/00 , B25D2250/185
摘要： It is an object of the present invention to provide an improved technique for preventing leakage of lubricant from an accommodating space that houses a driving mechanism, while regulating the internal pressure of the accommodating space in a power tool. A representative power tool includes a power tool body, a tool bit, a driving mechanism, a lubricant, an accommodating space, a passage and a lubricant leakage preventing region. The accommodating space is disposed in the body to house the driving mechanism and is hermetically sealed. The passage has an accommodating space side opening and an outside opening. The passage extends, starting from the accommodating space side opening, in a direction away from the outside opening. Then, the passage turns around and extends toward the outside opening. Further, the lubricant leakage preventing region is provided with the passage to prevent the lubricant from leaking from the inside to the outside of the accommodating space. According to the invention, the length of the passage can be made longer and the lubricant must travel a longer distance before leaking out. Therefore, a higher effect of preventing leakage can be obtained.
摘要翻译：本发明的目的是提供一种用于防止润滑剂从容纳驱动机构的容纳空间泄漏的改进技术，同时调节电动工具中的容纳空间的内部压力。代表性的电动工具包括动力工具主体，工具钻头，驱动机构，润滑剂，容纳空间，通道和润滑剂泄漏防止区域。容纳空间设置在主体中以容纳驱动机构并被密封。通道具有容纳空间侧开口和外部开口。通道从容纳空间侧开口开始沿远离外部开口的方向延伸。然后，通道转向并向外侧开口延伸。此外，润滑剂泄漏防止区域设置有通道，以防止润滑剂从容纳空间的内部泄漏到外部。根据本发明，可以使通道的长度更长，并且在泄漏之前润滑剂必须行进更长的距离。因此，可以获得更高的防止泄漏的效果。

3. 发明授权

US06176321B1 Power-driven hammer drill having an improved operating mode switch-over mechanism 失效
标题翻译：电动锤钻具有改进的操作模式切换机构
公开(公告)号：US06176321B1
公开(公告)日：2001-01-23
申请号：US09395478
申请日：1999-09-14
申请人： Takuo Arakawa , Toshiro Hirayama , Shin Nakamura
发明人： Takuo Arakawa , Toshiro Hirayama , Shin Nakamura
IPC分类号： E02D702
CPC分类号： B25D16/006 , B25D2211/003 , B25D2216/0023 , B25D2216/0038
摘要： A power-driven hammer drill 1 includes a rotary lever 8 for transmitting and disabling the transmission of the rotation of a motor 5 to a tool bit 4 and a slide lever 9 for transmitting and disabling the transmission of hammer blows to the tool bit 4. The rotary lever 8 is formed with a chamfer 52, whereas the slide lever 9 is formed with a straight portion 54 and a cut-out 53 which conforms to the circular edge of the rotary lever 8. When the slide lever 9 is in the lowermost position with the rotary lever 8 fitted in the cut-out 53, the rotary lever 8 is in the position to disconnect the rotation of the motor 5 to the tool bit 4, and while in this position, the slide lever 9 cannot be slid to its uppermost position, in which hammer blows cannot be transmitted to the tool bit 4. When the slide lever 9 is located in the uppermost position and the chamfer 52 of the rotary lever 8 is in the rearmost position, in which hammer blows cannot be transmitted to the tool bit 4 but rotation can be transmitted to the tool bit 4, the straight portion 54 opposes the chamfer 52 across a narrow gap so that the rotary lever 8 cannot be rotated to the rotation disabling position.
摘要翻译：电动锤钻1包括用于传送和禁止马达5的旋转传递到工具钻头4的旋转杆8和用于传递和禁止锤击锤击向工具钻头4的滑动杆9。旋转杆8形成有倒角52，而滑动杆9形成有与旋转杆8的圆形边缘一致的直线部分54和切口53.当滑动杆9处于最下方时旋转杆8安装在切口53中的位置，旋转杆8处于将马达5的旋转与工具4断开的位置，而在该位置，滑动杆9不能滑动到其最高位置，其中锤击不能传递到工具钻头4.当滑动杆9位于最高位置并且旋转杆8的倒角52处于不能传递锤击的最后位置时到工具位4但旋转可以传递到工具位4，直线部分54跨过窄间隙与倒角52相对，使得旋转杆8不能旋转到旋转禁止位置。

4. 发明授权

US07096973B2 Power tool 有权
标题翻译：电动工具
公开(公告)号：US07096973B2
公开(公告)日：2006-08-29
申请号：US10843036
申请日：2004-05-10
申请人： Hiroki Ikuta , Takuo Arakawa , Takahiro Kawakami
发明人： Hiroki Ikuta , Takuo Arakawa , Takahiro Kawakami
IPC分类号： B25D11/00
CPC分类号： B25D17/24 , B25D11/125 , B25D2217/0088
摘要： It is an object of the invention to provide a technique for further improving the vibration reducing performance in the power tool, while avoiding complicating the construction of the power tool. According to the present invention, a representative power tool may comprise a striker, a tool bit and a vibration reducer. The vibration reducer serves to reduce vibration on the striker by reciprocating in a direction opposite to the reciprocating direction of the striker. The path of the center of gravity of the vibration reducer is arranged to coincide with a path of the center of gravity of the striker. With such construction, because rotating moment is not exerted onto the reciprocating cylinder during the operation of the power tool, vibration reduction can be performed in a stable manner.
摘要翻译：本发明的目的是提供一种用于进一步提高电动工具中的减振性能的技术，同时避免电动工具的结构复杂化。根据本发明，代表性的电动工具可以包括撞针，工具头和减振器。减振器用于通过沿与撞针的往复运动方向相反的方向往复运动来减少撞针上的振动。减振器的重心的路径被设置成与撞针的重心的路径一致。通过这样的结构，由于在动力工具的运转中旋转力矩不会施加到往复运动缸上，所以能够以稳定的方式进行减振。

5. 发明授权

US5709391A Bit mounting device 失效
标题翻译：钻头安装装置
公开(公告)号：US5709391A
公开(公告)日：1998-01-20
申请号：US706229
申请日：1996-09-04
申请人： Takuo Arakawa , Yasutoshi Shimma , Eiichi Futamura
发明人： Takuo Arakawa , Yasutoshi Shimma , Eiichi Futamura
IPC分类号： B23B45/16 , B25D17/08 , B23B31/11
CPC分类号： B25D17/088 , B25D2217/0049 , Y10T279/17076 , Y10T279/17752 , Y10T279/17811
摘要： A bit mounting device is adapted for removably mounting a bit on a tool which has a barrel including a mounting hole adapted for receiving the bit. The bit mounting device includes an engaging member engageable with the bit and a control member mounted on the barrel. The control member is movable between a holding position and a releasing position. The control member in the holding position is operable to fix the engaging member in an engaging position for engagement with the bit. The control member in the releasing position is operable to permit the engaging member to move from the engaging position to a disengaging position for disengagement from the bit. A stopper mechanism is operable to hold the control member in the releasing position when the bit is removed from the barrel.
摘要翻译：一种安装装置适于可拆卸地将钻头安装在具有适于接收钻头的安装孔的工具上。钻头安装装置包括可与钻头接合的接合构件和安装在枪管上的控制构件。控制构件可在保持位置和释放位置之间移动。保持位置中的控制构件可操作以将接合构件固定在用于与钻头接合的接合位置。处于释放位置的控制构件可操作以允许接合构件从接合位置移动到脱离位置以脱离钻头。当钻头从筒体移除时，止动机构可操作以将控制构件保持在释放位置。

6. 发明申请

US20090223691A1 Impact tool 有权
标题翻译：冲击工具
公开(公告)号：US20090223691A1
公开(公告)日：2009-09-10
申请号：US12379528
申请日：2009-02-24
申请人： Hiroki Ikuta , Shin Nakamura , Yoshio Sugiyama , Masao Miwa , Takuya Sumi , Takuo Arakawa
发明人： Hiroki Ikuta , Shin Nakamura , Yoshio Sugiyama , Masao Miwa , Takuya Sumi , Takuo Arakawa
IPC分类号： B25D11/10 , B25D17/24
CPC分类号： B25D17/24 , B25D17/26 , B25D2211/003 , B25D2217/0088 , B25D2217/0092 , B25D2250/185 , B25F5/02 , Y10S173/03
摘要： It is an object of the invention to provide a technique that contributes to further improvement of an impact tool. A representative impact tool includes a motor, a tool body that houses the motor, a dynamic vibration reducer and a driving mechanism part that is driven by the motor and forcibly drives the dynamic vibration reducer by applying an external force other than vibration of the tool body to the dynamic vibration reducer, during hammering operation. At least one of the dynamic vibration reducer and the driving mechanism part is mounted to the tool body in a form of an assembly into which at least one of a plurality of component parts forming the dynamic vibration reducer and a plurality of component parts forming the driving mechanism part are assembled in advance.
摘要翻译：本发明的目的是提供一种有助于进一步改进冲击工具的技术。代表性的冲击工具包括电动机，容纳电动机的工具主体，动态减振器和由电动机驱动的驱动机构部分，并通过施加除了工具体的振动以外的外力来强制地驱动动态减振器对于动态减振器，在锤击操作期间。所述动态减振器和所述驱动机构部件中的至少一个以组装形式安装在所述工具主体上，所述组件的形成所述动态减振器的多个部件中的至少一个和形成所述驱动的多个部件机构部件预先组装。

7. 发明授权

US08621719B2 Auxiliary handle 失效
标题翻译：辅助手柄
公开(公告)号：US08621719B2
公开(公告)日：2014-01-07
申请号：US12457489
申请日：2009-06-12
申请人： Keiji Nakashima , Takuo Arakawa , Shinya Bito
发明人： Keiji Nakashima , Takuo Arakawa , Shinya Bito
IPC分类号： B25F5/02 , B25G1/00
CPC分类号： B25F5/026 , B25F5/006
摘要： It is an object of the invention to provide a technique for a reduction of vibration of an auxiliary handle for a hand-held power tool. The object can be achieved by a representative auxiliary handle. The auxiliary handle includes a ring-like mounting part, a pair of bases, a rod-like grip, one or arms and an elastic region. The bases are formed on a free end of the mounting part. The bases of the mounting part and extending end portions of the arms are arranged parallel to the longitudinal direction of the grip. The bases of the mounting part and the extending end portions of the arms are clamped by a bolt and a nut such that the mounting part holds the power tool body. The elastic region is provided in at least one of the mounting part, the bases and the extending end portions of the arms.
摘要翻译：本发明的目的是提供一种用于减少用于手持式电动工具的辅助手柄的振动的技术。该对象可以通过代表性的辅助手柄来实现。辅助手柄包括环形安装部分，一对基座，杆状握柄，一个或多个臂和弹性区域。底座形成在安装部件的自由端上。安装部的基部和臂的延伸端部与手柄的长度方向平行地配置。安装部的基部和臂的延伸端部通过螺栓和螺母夹持，使得安装部保持动力工具主体。弹性区域设置在臂的安装部分，基部和延伸端部中的至少一个中。

8. 发明授权

US5873418A Percussive tool having a reduced impact at the start of percussive operation 失效
标题翻译：打击乐器在敲击操作开始时的影响减小
公开(公告)号：US5873418A
公开(公告)日：1999-02-23
申请号：US826221
申请日：1997-03-27
申请人： Takuo Arakawa , Masaki Sakuragi
发明人： Takuo Arakawa , Masaki Sakuragi
IPC分类号： B25D17/10 , B25D11/00 , B25D16/00 , B25D11/04
CPC分类号： B25D16/00 , B25D11/005 , B25D2211/068 , B25D2250/035 , B25D2250/131
摘要： A percussive tool generates a reduced impact at the start of percussive operation following idling operation. The percussive tool has a cylinder containing a piston, an air chamber in front of the piston, and a striker disposed in front of the air chamber. A slide sleeve and a rimmed ring at the rear end thereof are fitted around the cylinder. The cylinder has formed therein an exhaust port and auxiliary ports in front of the exhaust port for placing the air chamber in communication with the atmosphere. When the slide sleeve is retracted, the exhaust port is closed by the rimmed ring. During percussive operation of the percussive tool, the auxiliary ports are always closed by the reciprocating striker and therefore not open to the air chamber. During idling operation, the striker takes an advanced position and opens the auxiliary ports, thereby placing the air chamber in communication with the atmosphere. The distance between the rear end of the striker and the auxiliary ports is set slightly shorter than the distance between the rear end of the ring and the exhaust port in normal operation, so that the auxiliary ports are opened prior to the exhaust port.
摘要翻译：撞击式工具在打嗝操作开始时产生影响减小。冲击工具具有包含活塞的气缸，活塞前面的空气室和设置在空气室前面的撞针。在其后端的滑动套筒和边缘的环安装在气缸周围。气缸在其中形成有用于将空气室与大气连通的排气口和排气口前面的辅助口。当滑动套筒缩回时，排气口被边框环封闭。在冲击式工具的敲击操作期间，辅助端口总是被往复式撞击器封闭，因此不会向空气室敞开。在空转操作期间，撞针处于前进位置并打开辅助口，从而使空气室与大气连通。在正常操作中，撞针后端与辅助口之间的距离设定得稍短于环的后端与排气口之间的距离，使得辅助口在排气口前打开。

9. 发明申请

US20100206596A1 HAND-HELD POWER TOOL 有权
标题翻译：手持电动工具
公开(公告)号：US20100206596A1
公开(公告)日：2010-08-19
申请号：US12733619
申请日：2008-09-17
申请人： Hikaru Kamegai , Takuo Arakawa
发明人： Hikaru Kamegai , Takuo Arakawa
IPC分类号： B25D17/24 , B25D17/04
CPC分类号： B25D17/043 , B23D51/01 , B25D17/04 , B25D2211/003 , B25D2211/068 , B25D2222/57 , B25D2250/321 , B25F5/026 , Y10T16/4713 , Y10T16/48
摘要： Improving vibration reduction of a handle in a hand-held power tool by performing a predetermined operation on a workpiece by linear movement of a tool bit in an axial direction. The power tool includes a power tool body, a handle and a vibration-proofing part. The vibration-proofing part includes an elastic element that is disposed between the power tool body and the handle and reduces transmission of vibration from the power tool body to the handle, and also includes a body-side receiving part and a handle-side receiving part which are opposed to each other so as to hold the elastic element. The vibration-proofing part is designed such that deformation of the elastic element is shearing deformation in each of the direction of a z-axis defined along the axial direction of the tool bit and the directions of a y-axis and an x-axis which intersect with the z-axis.
摘要翻译：通过工具的轴向线性移动对工件进行预定的操作，改善手持式电动工具中的把手的振动减少。电动工具包括电动工具本体，手柄和防振部件。防振部包括设置在动力工具主体和手柄之间的弹性元件，并且减少了从动力工具主体到手柄的振动传递，还包括主体侧接收部和手柄侧接收部它们彼此相对以保持弹性元件。防振部被设计成使得弹性元件的变形在沿着工具头的轴向限定的z轴方向和y轴和x轴的方向的每个方向上剪切变形，与z轴相交。

10. 发明授权

US07523790B2 Reciprocating power tool having a vibration-damping handle 有权
标题翻译：具有减震手柄的往复式动力工具
公开(公告)号：US07523790B2
公开(公告)日：2009-04-28
申请号：US11388995
申请日：2006-03-27
申请人： Takuo Arakawa , Yoshihiro Kasuya
发明人： Takuo Arakawa , Yoshihiro Kasuya
IPC分类号： B25D17/00
CPC分类号： B25D17/043 , B25D2250/371 , B25F5/006
摘要： It is an object of the invention to provide an effective technique for enhancing the effect of reducing vibration of a grip of a reciprocating power tool. According to the present invention, a representative reciprocating power tool may comprise a tool bit, a tool body and a grip. The grip is connected to the tool body via an elastic element and a vibration damping part. The elastic element is resiliently disposed between the tool body and the grip and serves to absorb vibration transmitted from the tool body to the grip during operation. The vibration damping part is disposed between the tool body and the grip and serves to damp and/or attenuate the vibration. According to the invention, the spring constant of the elastic element can be made smaller due to vibration damping part.
摘要翻译：本发明的目的是提供一种用于增强减小往复式电动工具的把手的振动的效果的有效技术。根据本发明，代表性的往复动力工具可以包括工具头，工具主体和把手。把手通过弹性元件和减震部分与工具主体连接。弹性元件弹性地设置在工具主体和把手之间，用于在操作期间吸收从工具主体传递到握把的振动。振动阻尼部分设置在工具主体和手柄之间，用于减震和/或衰减振动。根据本发明，弹性元件的弹簧常数可以由于减振部分而变小。

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