Patent ID: 8286358

Claim:
A portable cutting tool comprising: a housing that rotatably supports a cutting blade which is driven by a motor to cut a workpiece; a base having a first side to be connected with the housing, and a second side being the other side of the base and abutting on the workpiece, and having an opening which penetrates the first side and the second side and through which the cutting blade is protrudable from the second side; and a protrusion amount changing mechanism that has a link part extending from one of the base and the housing, and a fixing part which is provided at the other one of the base and the housing, is arranged opposite to a side surface of the cutting blade, comes to a fixed state with respect to the link part when moved in one direction in a direction orthogonal to a rotational shaft of the cutting blade, and comes to a moving state to be movable with respect to the link part when moved in another direction in the direction orthogonal to the rotational shaft, whereby a protrusion amount of the cutting blade from the second side is changed as the fixing part is moved with respect to the link part, wherein the fixing part includes: a lever part rotatably supported about an axis parallel to the rotational shaft of the cutting blade; an abutment portion that moves in the one direction by a predetermined rotational operation of the lever part to abut on the link part; and a guide part that is provided in such a way as to guide the fixing part to be relatively movable along the link part and hold the link part between the guide part and the abutment portion, and cooperates therewith to set the fixing part to be in the fixed state with respect to the link part, at a time the abutment portion abuts on the link part, wherein the abutment portion has a cam which rotates about an axis parallel to the rotational shaft, and wherein the abutment portion has an elastic member interposed between the cam and the link part, and the cam abuts on the link part via the elastic member.