Hitachi Koki Co., Ltd.

Koki Holdings Co., Ltd.

Hitachi Koko Co., Ltd.

Kenji Kobori

Tomomasa Nishikawa

Kazuhiko Funabashi

Takashi Ueda

Yoshiichi Komazaki

Toshinori Yasutomi

Shinichiro Sato

Hiroto Inagawa

Shinki Ohtsu

Shinichirou Satou

Yutaka Ito

Jyun Enta

Tsukasa Suzuura

Shingo Yamazaki

Noriyuki Horie

Shinichirou Sato

Tetsuo Ebata

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

In order to make it possible to easily carry out filling up of a compressed air to a compression chamber without making a fastener driving machine larger in size, there is provided a fastener driving machine that includes a cylinder that forms a piston chamber defined by a piston and drives a driver blade by the piston. The housing has a cylinder case part for housing a cylinder, and a handle part. A pressure accumulating container is provided on the cylinder. The pressure accumulating container includes a bottom wall portion and a top wall portion. A compression chamber that communicates with the piston chamber is provided therein.

Fastener driving machine

To provide a reciprocating tool capable of reducing noise by a simple and inexpensive configuration. In a reciprocating tool including a motor that is a rotary drive source, and a reciprocating motion converter that converts the rotation of the motor into the reciprocation of a tip tool, the reciprocating motion converter includes an eccentric rotation member that eccentrically rotates, a reciprocating member that is engaged with the eccentric rotation member and reciprocates, and an elastic member provided between the eccentric rotation member and the reciprocating member. Inside the reciprocating member, an intermediate member is provided, and the elastic member is interposed between the intermediate member and the reciprocating member.

Reciprocating tool

According to the invention, a drilling tool includes: a motor; a transmission drive unit for transmitting a rotation force of the motor to rotate a drill bit; and a dust collector for collecting dust produced from a workpiece drilled by the drill bit, wherein the dust collector is provided with a pierced portion pierced by the drill bit, a dust collection port for sucking the produced dust and its surrounding air, and a blowoff port for blowing air against a vicinity of the piercing drill bit.

Drilling tool with dust collector

A lawn mower comprising: a power supply; a chassis for holding the power supply; a fixed shaft attached to the chassis; a rotary blade which is rotatably supported with respect to the fixed shaft; a transmitting portion which transmits rotation of the power supply to the rotary blade; and a fixed blade which is coaxially-arranged with the rotary blade, wherein a distance between the rotary blade and the fixed blade can be varied.

Lawn mower

According to the invention, a drilling tool includes: a driving source; a transmission drive unit for transmitting a rotation force of the driving source; and a dust collector for collecting dust produced from a workpiece drilled by the end tool and blowing air against the workpiece, wherein a filtering means for filtering the air mixed with the collected dust and a centrifugal fan for taking in the filtered air and sending out the filtered air in a circumferential direction are provided, the centrifugal fan is disposed in a housing formed with an airflow sending port for sending a part of the air taken in to the dust collector and a discharge port for discharging a rest of the air to an outside, and a distance from the airflow sending port to the discharge port in a forward direction in a direction of rotation of the centrifugal fan is longer than the distance from the airflow sending port to the discharge port.

A drilling device includes an end cutting tool, a main housing, a motor, a transmission, and a dust collection unit. The end cutting tool processes a workpiece. The motor is provided in the main housing for generating a torque. The transmission transmits the torque to rotate the end cutting tool. The dust collection unit collects dust generated by the rotation of the end cutting tool. The dust collection unit includes a dust case for accumulating the dust therein. The dust case is detachable from the main housing and has an inlet and an outlet. The inlet and the outlet are oriented in a single direction.

Drilling device

A power tool includes: a power tool main body; a handle holder protruding from the power tool main body; a handle extending in a protruding direction of the handle holder and having an arm portion engaging the handle holder; and an elastic body carried between the power tool main body and the handle. The handle holder has a spherical convex outer circumferential face. The arm portion surrounds the handle holder and has a spherical concave inner circumferential face. The convex outer circumferential face of the handle holder is inserted and fitted into the concave inner circumferential face. The elastic body is carried between the power tool main body and the handle around the outer circumference of the handle holder in a radial direction vertical to a protruding-direction central axis of the handle holder.

Growing community of inventors

Ibaraki, Japan

Kenji Kobori