ACTUATOR,申请号JP20120205998-传众专利搜索

ACTUATOR

申请公布号：JP2014059042(A)

申请号：JP20120205998

申请日期：2012.09.19

申请公布日期：2014.04.03

申请人：

NSK LTD

发明人：SAKAI MOTOSHI;HASHIMOTO KOJI;WATANABE ATSUSHI;ABE YASUAKI

分类号：F16H25/20;F16H25/24

主分类号：F16H25/20

摘要：PROBLEM TO BE SOLVED: To provide an actuator capable of compatibly achieving operability and positioning accuracy.SOLUTION: An actuator 1 includes a screw shaft 10 having a spiral rolling groove formed in an axial direction on an outer peripheral surface, and a nut 20 which has a rolling groove corresponding to the rolling groove and formed on an inner peripheral surface and is screwed into the screw shaft 10 via a plurality of rolling elements disposed in a rolling element rolling path formed of the rolling groove and the rolling groove in the screw shaft 10. The screw shaft 10 or the nut 20 functions as a direct-acting member 2 directly acting in an axial direction by relative rotation of the screw shaft 10 and the nut 20. The direct-acting member 2 (screw shaft 10) includes an elastic member 40 abutting on an opposite member 50. The elastic member 40 has a prescribed spring coefficient.