Actuator

• Main Authors: Yamakura Wataru, Kono Takaya, Akiyoshi Mitsuru
• Format: Patent
• Language: English
• Published: 12.12.2017
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

In an actuator having a long screw shaft with a first roller rolling groove in a spiral shape formed on an outer periphery, an inner block where a screw hole through which the screw shaft penetrates is formed, and which has a second roller rolling groove that is formed on an outer periphery to be parallel with the screw shaft, an outer rail that faces the second roller rolling groove, and a plurality of rollers that are respectively arranged between the screw shaft and the inner block, and between the inner block and the outer rail, side face covers that are laid between a pair of end portion members that are installed at both end portions of the screw shaft, and a top face cover that is disposed to close an opening portion that is formed between the side face covers and is opened parallel with the screw shaft are included, the side face covers each includes a top plate that is formed to be parallel with the top face cover, and a side plate that hangs from one end of the top plate, and the end portion members each has posture retaining device that contacts a corner portion of the top plate and the side plate.