Patent ID: 9488220
Filing Date: 2016-11-08
CPC Classification: F16C

Claim Text:
1. A linear guideway, comprising: an elongated rail defined along a longitudinal direction; a slider having a groove, wherein the slider is movably disposed on the rail via the groove, and the groove has two inner loading surfaces facing each other and parallel to the longitudinal direction; two circulators respectively arranged at two outer sides of the groove; wherein the circulators are respectively connected to the inner loading surfaces of the groove, and each circulator comprises: two wire holders respectively arranged adjacent to the two inner loading surfaces, wherein each wire holder and the corresponding inner loading surface cooperatively define an internal channel; two end caps respectively fixed on two opposite end surfaces of the slider and movably disposed on the rail, wherein each end cap has two retaining troughs recessed on a surface thereof adjacent to the slider, the corner portions of the circulators are respectively inserted into the retaining troughs of the end caps, such that each corner portion and the corresponding retaining trough cooperatively define a corner channel, wherein each internal channel, the two adjacent corner channels, and the adjacent external channel jointly define a circulation channel; and a plurality of rollers received in the circulation channels, wherein each roller is a spherical roller, each inner loading surface has two arc-shaped first segments and an arc-shaped second segment arranged between the two first segments, a radius of each first segment is substantially identical to a radius of each spherical roller and is greater than a radius of each second segment; each connecting surface has two arc-shaped first connecting segments and an arc-shaped second connecting segment arranged between the two first connecting segments, a radius of each first connecting segment is greater than a radius of each second connecting segment; the first connecting segments of each connecting surface are respectively connected to the first segments of the corresponding inner loading surface, and the second connecting segment of each connecting surface is connected to the corresponding second segment of the inner loading surface.