Patent ID: 7862236
Filing Date: 2011-01-04
Classification: F16C

Abstract:
1. A circumrotating circulating guiding assembly of a linear sliding rail, comprising: a sliding rail; a sliding base body having an accommodating space, a plurality of engaging portions, two recessed portions and a plurality of guiding holes, the accommodating space being recessed to accommodate the sliding rail; the engaging portions and the recessed portions being provided longitudinally on inner edge surfaces of the sliding base body, the guiding holes penetrating through front and rear end faces of the sliding base body; a plurality of guiding assemblies provided in the accommodating space to straddle the front and rear end faces of the sliding base body and to correspond to the engaging portions and the guiding holes; each of the guiding assemblies including two circumrotating guiding portions, a plurality of fixing pieces, a spacer and a plurality of guiding tubes, the two circumrotating guiding portions being provided on the front and rear ends of the sliding base body respectively, the fixing pieces and the spacer being provided between the two circumrotating guiding portions, each fixing portion being fixed to a respective engaging portion, one side of the spacer being engaged in the recessed portion, the guiding tubes being inserted individually into the guiding holes, each of the two circumrotating guiding portions having a plurality of first combining portions, both ends of each guiding tube having a second combining portion, each first combining portion being provided in a respective guiding hole and combined with the second combining portion of a respective guiding tube; the sliding rail, the sliding base body and the guiding assembly together forming a circumrotating circulating path; a plurality of rolling elements provided on the circumrotating circulating path in a rolling manner; and a pair of covers covering the front end and the rear end of the sliding base body, and wherein each cover has a contour corresponding to that of the front and rear ends of the sliding base body; wherein each end of the spacer has an insertion portion, each of the two circumrotating guiding portions has an insertion hole, the insertion portion is inserted into the insertion hole, the cover further comprises a positioning block, the positioning block is protruded from the inside of the cover and is provided in the insertion hole of the circumrotating guiding portion.