PROBLEM TO BE SOLVED: To provide a portable working machine that can reliably perform switching regulation/release of co-rotation between a rotating shaft and a clamping screw by a simple configuration.SOLUTION: A portable working machine includes: a driving source 21 a first shaft 32 with one end connected to the driving source 21, and rotated by the driving force of the driving source 21 a second shaft 53 rotated by torque of the first shaft 32 a gear case 51 covering the other end of the first shaft 32 a gear part 52 provided in the gear case 51, connecting the first shaft 32 with the second shaft 53, and transmitting torque of the first shaft 32 to the second shaft 53 a working part 54 rotated integrally with the second shaft 53 and processing an object to be processed a screw 57 screwed and fixing the working part 54 to the second shaft 53 and a cover 59 covering the gear case 51, and movable to the gear case 51 between a regulation position for regulating the rotation of the second shaft 53 and the releasing position for releasing the regulation of the rotation of the second shaft 53.COPYRIGHT: (C)2015,JPO&INPIT【課題】簡易な構成によって、回転軸と締付けねじとの共回りの規制・解除の切替を確実に行うことができる携帯用作業機の提供。【解決手段】駆動源21と、一端部が駆動源21に接続され、駆動源21の駆動力によって回転する第1軸32と、第1軸32の回転力により回転する第2軸53と、第1軸32の他端部を覆うギヤケース51と、ギヤケース51内に設けられ、第1軸32と第2軸53とを接続し、第1軸32の回転力を第2軸53に伝達するギヤ52部と、第2軸53と一体的に回転し処理対象を処理する作業部54と、螺合して作業部54を第2軸53に固定するねじ57と、ギヤケース51を覆い、第2軸53の回転を規制する規制位置と第2軸53の回転の規制を解除する解除位置との間でギヤケース51に対し移動可能なカバー59と、を備えたことを特徴とする携帯用作業機である。【選択図】図3
