Linear motion rolling contact guide unit having opposite roller and ball contacts
AssigneeNippon Thompson Co., Ltd.
InventorsSeiji Takei, Azuyasu Kitayama
Life of this patent
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Abstract
A linear motion rolling contact guide unit includes a rail extending over a desired length, a slider slidably mounted on the rail and a plurality of rolling members interposed between the rail and the slider. The rail has a pair of first and second opposite side surfaces. A pair of oppositely inclined guide channels for rollers is provided between the first side surface of the rail and a corresponding opposite surface of the slider and another guide channel for balls is provided between the second side surface of the rail and a corresponding opposite surface of the slider.
Claims8
A linear motion rolling contact guide units, comprising:
- a rail extending over a desired length;
- a slider slidably mounted on said rail with only two rolling contacts at one side of the rail and with only one rolling contact at an opposite side of the rail;
- a pair of separate first and second guide channels formed at a first height and a second height, respectively, between a first side surface of said rail and a corresponding opposite side surface of said slider, said first height being different in vertical level from said second height;
- said only two rolling contracts being provided by a plurality of rollers provided in each of said pair of first and second guide channels;
- a third guide channel formed at a third height inbetween said first and second heights between a second side surface of said rail opposite to said first side surface of said rail and a corresponding opposite side surface of said slider;
- and
- said only rolling contact being provided by a plurality of balls provided in said third guide channel.
Dependencies are inferred from the claim text.