Hitachi Koki Co., Ltd.

Koki Holdings Co., Ltd.

Koki Holdings Kabushiki Kaisha

Mizuho Nakamura

Tomomasa Nishikawa

Hironori Mashiko

Katsuhiro Oomori

Nobuhiro Takano

Yutaka Ito

Masanori Okada

Hideyuki Tanimoto

Kazutaka Iwata

Atsushi Nakagawa

Hiroki Uchida

Yoshio Iimura

Teruo Imai

Seiichi Kodato

Hayato Yamaguchi

Kouji Sagawa

Tatsuya Ito

Saroma Nakano

Masato Sakai

Takeshi Taniguchi

Chikai Yoshimizu

Yoshiki Aoki

Hideaki Terashima

Yoshitaka Suzuki

Shinichi Kakefuda

Kenichirou Yoshida

Masayuki Ogura

Hitoshi Tsuzuki

Shinji Takano

Yoshio Osada

Takeshi Takeda

Hiroyuki Hasegawa

Junichi Kamimura

Hiroyuki Saitou

Shuji Takeda

Shigeru Takahashi

Kimitaka Abo

Satsuo Sato

Takashi Kawamata

Atsushi Sumi

Tomoyuki Hoshi

Yoshiki Aoi

Portable electric nailer

To provide a portable blower having excellent battery heat radiating properties. A battery mounting portion projects convexly into an air passage. Outer surfaces of a bottom surface section and side surface sections of the battery mounting portion form part of an inner surface of the air passage. The battery mounting portion holds a battery pack at an attitude that a center of gravity of the battery pack is as close to a handle portion as possible. Specifically, the battery mounting portion holds the battery pack in such a manner that the greatest surface of the battery pack having a substantially cubic shape faces the handle portion. The battery mounting portion holds the battery pack in such a manner that a longitudinal direction of the battery pack faces the air passage.

Portable blower

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 brushless motor is incorporated in one of divided constituent members of a motor casing which is disassembled, and then, the divided constituent members of the motor casing which is disassembled are connected to each other into the motor casing assembled with mgachine screws screwed into machine screw holes. As this occurs, when a wiring of the brushless motor is held by a first stationary blade portion and a second stationary blade portion, the wiring is allowed to lead to an outside of an outer cylindrical portion through a gap defined between the first stationary blade portion and the second stationary blade portion.

An electric tool including: a motor configured to drive a front end tool; a control device configure to control rotation of the motor; a storage part configured to store a method of driving the motor by the control device; and a communication terminal to which a communication line for reading or writing information of the storage part is configured to be connected.

Electric tool and communication plug for electric tool

According to an aspect of the present invention, there is provided an impact tool including: a motor; a hammer connected to an output portion of the motor; and an anvil to be struck by the hammer in a rotation direction and having a rotary shaft, the hammer striking the anvil in the rotation direction by driving the motor in pulses, wherein the anvil is provided in front of the hammer, wherein the hammer is driven in pulses by the motor, and wherein a rotation angle of the hammer is substantially proportional to a rotation angle of the motor.

Impact tool

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.

An electric working machine including: an input part; a control unit configured to control a motor in accordance with an operation amount of the input part; and a switching part; wherein, when a predetermined operation is performed to the switching part, the control unit shifts to a fixed control mode in which the motor is controlled in accordance with an operation amount of the input part at the time when the predetermined operation is performed to the switching part, irrespective of an operation amount of the input part after the predetermined operation is performed to the switching part.

Electric working machine

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.

Axial blower

The invention provides a reciprocating electric tool () having a brushless motor (), a plunger (), and control means (). The plunger () is driven by the brushless motor and reciprocating between two dead centers. A end bit () is mounted to one end of the plunger in a reciprocating direction. The control means () controls a rotational speed of the brushless motor based on a position of the plunger.

Reciprocating electric tool

Portable electric driver

The electric tool includes a base having an opening portion and a bottom face; a blade being projected downward from the bottom face of the base through the opening portion of the base, the blade being capable of cutting while sliding the bottom face of the base on an upper face of a work piece; a motor driving the blade; a housing accommodating the motor. The bottom face of the base is at least partially coated with a resin including fluorine.

Electric tool

A portable cutting device capable of changing and adjusting a cutting depth of a circular saw blade relative to a base with lesser labor. A saw cover is pivoted on the base to change the cutting depth. An adjustment guide extends from the base in a pivotally moving direction of the saw cover in a superposed relation to the saw cover. A tightening unit is disposed to the saw cover at a position superposed with the adjustment guide and the saw cover for providing a selective tightening between the saw cover and the adjustment guide. The tightening unit includes a shaft part extending through the saw cover and the adjustment guide, a pivot operation part pivotally movable about an axis of the shaft part, and an urging part disposed over the shaft part and movable by the pivot operation part in the axial direction of the shaft part.

Portable cutting device capable of adjusting cutting depth

Portable electric circular saw

Growing community of inventors

Ibaraki, Japan

Mizuho Nakamura