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公开(公告)号：US10654153B2
公开(公告)日：2020-05-19
申请号：US15546893
申请日：2016-01-08
摘要： In order to provide an impact tool which is capable of increasing a striking force in a rotational direction of being applied from a hammer to an anvil, the impact tool includes: an electric motor; an anvil which supports a work tool and is driven by the electric motor; and a hammer which applies the striking force in the rotational direction to the anvil. The impact tool is provided with: a spindle which is arranged to be concentric with the anvil, supports the hammer to be movable in an axial direction and the rotational direction with respect to the anvil, and transmits motive power of the electric motor to the anvil; and a control unit which controls rotation speed of the electric motor. The number of strokes of the anvil due to one rotation of the hammer differs in response to rotation speed of the electric motor.
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公开(公告)号：US09669536B2
公开(公告)日：2017-06-06
申请号：US14582686
申请日：2014-12-24
发明人： Yutaka Ito , Itsushi Ogawa , Junichi Toukairin , Jyun Enta
CPC分类号： B25F5/02 , B23B31/10 , B23D51/10 , B24B23/04 , B24B27/08 , B24B45/006 , B27B5/32 , B27B19/006 , Y10T279/33
摘要： A powered working machine facilitating work of fixing a tip tool to a tool supporting member is provided. A powered working machine in which a tip tool is driven by power of an electric-powered motor includes: an output shaft to which the tip tool is attached; a tool fixing member which fixes the tip tool to the output shaft; a second shaft to/from which the tool fixing member is attached/detached; a clamp having a locked state in which a state of attachment of the tool fixing member to the second shaft is maintained and an unlocked state in which the tool fixing member can be detached from the second shaft; and a guide member having a first rotation position at which the clamp is in the locked state and a second rotation position at which the clamp is in the unlocked state.
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