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1. (WO2018131535) SEAL MEMBER FOR BALL SCREW DEVICE

Pub. No.:    WO/2018/131535    International Application No.:    PCT/JP2018/000067
Publication Date: Fri Jul 20 01:59:59 CEST 2018 International Filing Date: Sat Jan 06 00:59:59 CET 2018
IPC: F16H 25/24
Applicants: THK CO., LTD.
THK株式会社
Inventors: KUBOTA Yuji
久保田 祐次
NAKAMURA Futoshi
中村 太
NISHIDE Tetsuhiro
西出 哲弘
KAWAI Kotaro
河合 弘太郎
ZHAO Bin
趙 彬
SUGIYAMA Tomoyuki
杉山 知之
Title: SEAL MEMBER FOR BALL SCREW DEVICE
Abstract:
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).