Linear drive device for use in electric chair or electrical hospital bed, has secondary guide rail with through hole for execution of guide screw and primary guide rail, which is present covers at side of guide screw

摘要

The linear drive device has a secondary guide rail (31,41) with a through hole (113) for the execution of the guide screw and a primary guide rail (21), which is present covers at a side of the guide screw. The primary guide plate is connected with the fastening base (11) and is guided over an upper plate and two side plates extending from the upper plate. The upper side of secondary guide rail is not below the lower surface of side plate and a sliding element is present at the exterior of the primary guide rail.