Koki Holdings Co., Ltd.

Hitachi Koki Co., Ltd.

Jyun Enta

Takashi Ueda

Haruhisa Fujisawa

Yutaka Ito

Toshinori Yasutomi

Yoshiichi Komazaki

Kenji Kobori

Shinichiro Sato

Junichi Toukairin

Takuya Yoshinari

Itsushi Ogawa

Naoto Wakatabe

Takafumi Itoh

Takafumi Itho

A driver including: an ejection part to which a fastener is supplied; a driver blade which moves from a first position toward a second position and drives the fastener into a driven member; and a rack provided to the driver blade. The driver further includes: a rotary component engaging with the rack and moving the driver blade from the second position to the first position; and a lock plate engaging with the rack. The driver blade moves from the second position to the first position while the rotary component rotates once, the rotary component is released from engaging with the rack after the driver blade moves from the second position to the first position, and moves from the first position to the second position, and the lock plate is engageable with the rack when the driver blade stops before reaching the second position from the first position.

Driver

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.

Powered working machine

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Ibaraki, Japan

Jyun Enta