Hitachi Koki Co., Ltd.

Hirokazu Yoshida

Tomoyoshi Yokota

Kenji Niwa

Satoru Gunji

A portable cutting tool includes: a cutting tool main body having a motor, a rotating blade and a saw cover for covering a part of the rotating blade, a base including a slide surface and a supporting part, and a guide including a pole supported by the supporting part, and a guiding part having a guide surface substantially orthogonal to the slide surface. An interposition member can be disposed so as to interpose between the guide and a side end of the base. The distance between the rotating blade and the guide surface is adjustable by changing a position of the guide. The portable cutting tool includes a contact preventing unit is provided for regulating an adjustment range of the guide to prevent contact of the guide surface and the rotating blade when the guide is attached to the base with the interposition member removed.

Guide and portable cutting tool provided therewith

In a portable electric circular saw (portable cutting tool) including a cutting tool body having a motor serving as a driving source and a saw blade (cutting tool) driven to rotate by the motor and a base guiding the cutting tool body along a surface of a material to be cut, and allowing a parallel ruler to be mounted on the base, guide bars respectively inserted through insertion holes formed in the base are provided with a dust guard that can slide parallel to an end face of the saw blade and can abut against the end face of the saw blade.

Portable cutting tool

A portable cutting tool includes a saw blade for cutting a workpiece, a cutting tool main body having a motor for driving to rotate the saw blade, a base for guiding the cutting tool main body along a surface of the workpiece, and an inclining mechanism for inclining the base by pivoting the base centering on a support shaft of the cutting tool main body. The inclining mechanism includes a first circular arc member provided to be contiguous to at least one of a front end portion and a rear end portion of the base, pivoted along with the base centering on the support shaft and having a first guide hole in a circular arc shape penetrated in a radius direction thereof, and includes a fixing unit for fixing a position of pivoting the base relative to the cutting tool at an arbitrary position the first guide hole.

In the portable electrical circular saw (electrical tool) in which a commutator motor (permanent magnet motor) is mounted in a motor case (housing) which is integrally formed in a tube shape, the commutator motor includes a stator fixed to an inner circumferential surface of the motor case and a rotor which is rotatably disposed in the stator, and a plate having a plurality of protrusions is disposed on at least one of the both axial ends of a rotor core of the rotor, an outer diameter of at least two protrusions of the plate is larger than an outer diameter of the rotor core and smaller than an inner diameter of the stator.

Growing community of inventors

Niigata, Japan

Hirokazu Yoshida