Rolling element spacers for rolling guide units
AssigneeThk Co., Ltd.
InventorsTakeki Shirai, Hiroshi Niwa, Kentarou Nishimura, Yasuyuki Abe, Kiyomi Tamura
Life of this patent
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Abstract
The present invention provides rolling element spacers used in a rolling guide unit provided with an endless circulating passage for balls; arranged with plural balls alternately therewith in the endless circulating passage; and circulated with these balls in the endless circulating passage. Each of the rolling element spacers has a pair of retaining seats which the balls contact, and is formed so that, on a ball cutting plane perpendicular to the center of rotation of each ball, each retaining seat and a relative ball contact each other at only the two portions of the retaining seat that are in the vicinity of both ends thereof.
Claims5
Rolling element spacers used in a rolling guide unit in which a pair of members make a continuous relative movement via a row of endlessly circulated rolling elements, interposed between adjacent rolling elements in an endless circulating passage, and circulated with the rolling elements, characterized in that:
- each of the rolling element spacers is provided with a pair of retaining seats which the rolling elements contact, the rolling elements contacting only the two portions of each retaining seat which are in the vicinity of both ends thereof, on a rolling element cutting plane perpendicular to the axis of rotation of each rolling element.
Dependencies are inferred from the claim text.