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Patent Searching and Data


Title:
SEAL MEMBER FOR BALL SCREW DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/131535
Kind Code:
A1
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).

Inventors:
KUBOTA YUJI
NAKAMURA FUTOSHI
NISHIDE TETSUHIRO
KAWAI KOTARO
ZHAO BIN
SUGIYAMA TOMOYUKI
Application Number:
JP2018/000067
Publication Date:
July 19, 2018
Filing Date:
January 05, 2018
Export Citation:
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Assignee:
THK CO LTD (JP)
International Classes:
F16H25/24
Foreign References:
JP2007263281A2007-10-11
JP2000230619A2000-08-22
JP2010169114A2010-08-05
JP2014043879A2014-03-13
Attorney, Agent or Firm:
IDE Tetsuroh (JP)
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