Hitachi Koki Co., Ltd.

Naoya Eto

Takuhiro Murakami

Hiroto Inagawa

Mitsuo Ogura

Yoshikazu Yokoyama

Junichi Kamimura

Mitsuyuki Ishikawa

Satsuo Sato

Yoshimitsu Kawasaki

Shinichi Sakuma

Juurou Kobayashi

Hiroshi Sato

Kenji Niwa

Takuma Nonaka

An electric-powered cutting machine includes a reciprocable plunger held by and protruding outward from a housing; an operation member capable of being pivoted on the housing; and a blade holding mechanism disposed at a tip end portion of the plunger, the blade holding mechanism causing a blade to be detachably attached to the plunger. The operation member includes an operation portion and an abutting portion, wherein a distance from the operation portion to a rotating fulcrum is longer than a distance from the abutting portion to the rotating fulcrum. The blade holding mechanism is biased and is capable of swinging, and the blade holding mechanism includes a rotating member capable of being pressed against a side of the blade, wherein the abutting portion abuts against the rotating member when the operating member swings, and wherein the blade is detachably attached to the plunger by swinging of the rotating member.

Electric-powered cutting machine with blade holding mechanism

An electric-powered cutting machine includes: an electric motor, a housing for the electric motor; a plunger driven by the electric motor to reciprocate; and a blade holding mechanism. The blade holding mechanism holds a blade at a tip end portion of the plunger. The blade holding mechanism includes: a blade receiving face including a groove, a swinging member and a pressing member. The groove is shaped substantially the same as an attachment portion of the blade. The swinging member has one and other ends and pivoted at a swing fulcrum. The one end has a blade pressing portion capable of being disposed to oppose to the groove. The other end elongates to separate from the plunger. The pressing member presses the one end toward the groove.

Electric-powered cutting machine

Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission keycomposed of high-strength plastic is provided between an output shaftand a gearand a plane or a V-groove is formed on each of the output shaftand the gearcontacting the power transmission key

Electric power tool

Disclosed is an electric power tool having a gear mechanism, which reduces a noise by absorbing collision of gears and is resistible to a high torque. A power transmission key composed of high-strength plastic is provided between an output shaft and a gear , and a plane or a V-groove is formed on each of the output shaft and the gear contacting the power transmission key

A portable circular saw is disclosed which includes a mechanism for simply and efficiently adjusting parallelism of the saw blade to the base. Two connecting members positioned at the front and rear of the saw connect the base of the saw to the saw cover, and the mechanism for adjusting parallelism is part of the front connecting member.

Growing community of inventors

Ibaraki, Japan

Naoya Eto