Patent ID: 9636840
Date: 2017-05-02
CPC Classifications: B27B,F16H

Claim:
1. A chain saw comprising an adjustment mechanism that adjusts tension of a saw chain attached along a guide bar projecting from a main body, wherein the adjustment mechanism includes: a moving element that moves the guide bar forward/backward with respect to the main body; and a transmission mechanism including: wherein when the first gear is rotated along with rotation of the first rotation member, the moving element is moved via the second gear, wherein the moving element is moved on the rotation shaft in an axial direction along with rotation of the rotation shaft, wherein the first gear and the second gear are spur gears, and the third gear and the fourth gear are bevel gears, wherein the first gear and the second gear are disposed at positions overlapped with the first rotation member with respect to an axial direction of a rotation shaft of the first rotation member, and wherein the third gear, the fourth gear, and the rotation shaft are disposed at positions not overlapped with the first rotation member with respect to an axial direction of the rotation shaft of the first rotation member.