| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball screw seal which retains a lubricant within a nut and prevents a foreign substance from entering the nut, and which has simple structure and low cost. <P>SOLUTION: A lip part 41 of a seal 4 is comprised of a groove contact portion 41a in contact with spiral grooves 2a of a threaded shaft 2, an outer circumference contact portion 41b in contact with an outer circumferential surface 2b of the threaded shaft 2, and a connection part 41c connecting both portions 41a, 41b. A distal end of the groove contact portion 41a is turned toward the inside of a nut 1 in an axial direction, and a distal end of the outer circumference contact portion 41b is turned toward the outside of the nut 1 in the axial direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
