Patent ID: 7770963

Claim:
A cab structure for a construction machine that is arranged on an upper revolving unit that is mounted to a traveling unit, the cab structure for a construction machine comprising: first, second, third and fourth pole members that are respectively disposed at four corners of the cab structure and substantially arranged along a vertical direction with the first and second pole members being disposed in a rear end of the cab structure; a floor frame that is substantially arranged along a horizontal plane to form a part of a floor; and a reinforcement member that couples a lower end of the first pole member to the floor frame so that the lower end of the first pole member is vertically spaced apart from said floor frame by the reinforce member, the reinforcement member including a rear plate-shaped member arranged generally along a rear face of the cab structure and a side plate-shaped member arranged generally along a side face of the cab structure with the rear plate-shaped member and the side plate-shaped member being joined together, the floor frame being coupled with lower end portions of the second, third and fourth pole members and the reinforcement member at positions disposed along the horizontal plane.