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|1. (WO2018131535) SEAL MEMBER FOR BALL SCREW DEVICE|
|Applicants:||THK CO., LTD.
|Title:||SEAL MEMBER FOR BALL SCREW DEVICE|
A seal member for a ball screw device that is able to accommodate changes in the material and plate thickness of a seal plate in a flexible manner, has a simple configuration, and enables the manufacturing cost and the cost of managing parts to be reduced. This seal member (5), which is secured to an axial end surface of a nut member (3) of a ball screw device, and seals the gap between the nut member (3) and a threaded shaft (2), is equipped with: multiple base plates (51) having a through-hole the inner diameter of which is larger than the outer shape of the threaded shaft (2); spacer plates (52) that are sandwiched between two base plates (51) which are adjacent to each other, and that have a seal accommodation hole (52b) the inner diameter of which is larger than the inner diameter of the through-holes in the base plates (51); and a seal plate (50) that has a shaft-accommodating hole (50a) corresponding to the cross-sectional shape of the threaded shaft (2) perpendicular to the axial direction thereof, and that is arranged in the seal accommodation hole (52b) of the spacer plate (52).