Hitachi Koki Co., Ltd.

Koki Holdings Co., Ltd.

Yutaka Ito

Jyun Enta

Tomomasa Nishikawa

Takashi Ueda

Katsuhiro Oomori

Mizuho Nakamura

Yoshiichi Komazaki

Hironori Mashiko

Toshinori Yasutomi

Kenji Kobori

Shinichiro Sato

Nobuhiro Takano

Hideyuki Tanimoto

Kazutaka Iwata

Yoshihiro Nakano

Atsushi Nakagawa

Hiroyuki Oda

Junichi Toukairin

Hiroki Uchida

Masayuki Ogura

Takashi Nishimura

Takeshi Takeda

Hayato Yamaguchi

Shigeru Takahashi

Itsushi Ogawa

Atsushi Sumi

Saroma Nakano

Kazunori Matsushita

Noritaka Tadano

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

An electronic pulse driver includes a motor, a hammer, an anvil, an end tool mounting unit, a power supply unit, and a control unit. The hammer is rotatable together with the anvil. The end tool mounting unit transmits the rotation of the anvil to an end tool. The power supply unit supplies a drive electric power to the motor. The control unit controls the power supply unit to halt a supply of the drive electric power to the motor when an electric current flowing to the motor increases to a prescribed value. The control unit controls the power supply unit to supply to the motor a prestart electric power lower than the drive electric power before supplying the drive electric power in order to permit the power supply unit to supply the drive electric power after the hammer is in contact with the anvil.

Power tool

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

An impact tool () includes a motor (); a hammer () having a rotational axis extending in a first direction, the hammer () being rotatable in a rotational direction including a forward direction and a reverse direction opposite to the forward direction by the motor () and being movable in the first direction and a second direction opposite to the first direction; an anvil () disposed at the first direction side of the hammer () and strikable by the hammer () in the forward direction, the hammer () that has been struck the anvil () being moved in the second direction to come free from the anvil (); and a fixing member (A,A) that selectively allows the hammer () to move in the second direction or prevents the hammer () from moving in the second direction.

Impact tool

According to an aspect of the present invention, there is provided an impact tool including: a motor drivable in an intermittent driving mode; a hammer connected to the motor; an anvil to be struck by the hammer to thereby rotate/strike a tip tool; and a control unit that controls a rotation of the motor by switching a driving pulse supplied to the motor in accordance with a load applied onto the tip tool.

An adjuster has a cylindrical shape and is rotatably supported in a housing of a fastener-driving tool about an axis parallel to one direction. The adjuster has an outer circumferential surface provided with one of a first recessed portion and a first protruding portion. A bumper is movable in the one direction and another direction opposite the one direction according to a rotation of the adjuster. An urging member has one of a second recessed portion and a second protruding portion. One of the second recessed portion and the second protruding portion is constantly in contact with the outer circumferential surface and is engaged with the one of the first recessed portion and the first protruding portion.

Fastener-driving tool

A laser marking device () includes a laser light source () that emits a laser beam, and a beam splitter () receiving the laser beam and allowing a part of the laser beam to be reflected thereat and a remaining part of the laser beam to be transmitted therethorogh. The beam splitter () has an unpolarized film () into which the laser beam is entered to divide the laser beam into a plurality of laser beams that travels in different directions, at a predetermined rate regardless of change of a polarized characteristic of the laser beam.

Laser marking device

Growing community of inventors

Hitachinaka, Japan

Yutaka Ito