Abstract: A parallel link robot includes a base, a movable member, and multiple arms that connect the base and the movable member in parallel. Each of the arms includes: a drive link that is rotationally driven by a motor in the base; two parallel passive links that couple the drive link and the movable member; ball joints between the drive link and the corresponding passive link and between the movable member and the corresponding passive link; and attachment mechanisms that detachably attach the ball joints to the corresponding drive link or the movable member. Each ball joint includes a ball and a fixed part integral with the ball. At least one of the attachment mechanisms includes: a first screw hole in the fixed part; a second through-hole in the drive link or the movable member; and a screw member that is fastened to the first screw hole through the second through-hole.

Abstract: A housing includes: a housing body that contains at least one electromechanical or mechanical component, the housing body including a front plate and a pair of side plates, the plates being connected to a bottom plate in such a manner that the housing body includes an opening; a cover for closing the opening; and a gasket interposed between an edge portion of the housing body and an edge portion of the cover to tightly close an inside of the housing body. An edge portion of each of the side plates has a curved shape.

Abstract: A housing includes: a housing body that contains at least one electromechanical or mechanical component, the housing body including a front plate and a pair of side plates, the plates being connected to a bottom plate in such a manner that the housing body includes an opening; a cover for closing the opening; and a gasket interposed between an edge portion of the housing body and an edge portion of the cover to tightly close an inside of the housing body. An edge portion of each of the side plates has a curved shape.