Linear motion rolling guide unit
AssigneeNippon Thompson Co., Ltd.
InventorsKouhei Yuasa, Masahide Saitoh
Life of this patent
Estimating the term…
Abstract
The linear motion rolling guide unit has sealing devices that can be applied without having to modify the fundamental specifications of the existing unit and which can also be installed and removed easily. Each of the seals in the sealing device comprises a metal plate core and a rubber bonded to the core by baking. The core has at the central part a notched portion that allows a pair of seal side portions to be opened or expanded. Replacement of the seals can be done simply by fitting new seals over the track rail from above. The interference of the seals in the assembled sealing device can be adjusted easily by adjusting the distance that the adjust screws, whose front ends contact the side surface of the core, are screwed in.
Claims9
A linear motion rolling guide unit comprising:
- a track rail having raceway surfaces on longitudinally extending sidewall surfaces thereof;
- a slider sliding on the track rail through rolling elements;
- and
- sealing devices secured to end surfaces of the slider and adapted to slide on the track rail;
- wherein the sealing devices comprises:
- seal cassettes having top portions located on the upper side of the track rail and side portions located on both sides of the top portions and on both sides of the track rail;
- seals accommodated in the seal cassettes and having seal top portions in sliding contact with the upper surface of the track rail and a pair of seal side portions on both sides of the seal top portions that can be opened away from each other;
- and
- scraper plates accommodated in, and located at the end surfaces of, the seal cassettes and positioned above the track rail in such a way as to form a small gap between the scraper plates and the track rail.
Dependencies are inferred from the claim text.