Patent ID: 7101108
Filing Date: 2006-09-05
Classification: E06B,Y10T

Abstract:
1. A tubular collar in combination with a fixation piece of a window shade rod, wherein: the collar has an outer end provided with a plurality of stop edges and an outer wall formed with a plurality of grooves extending through two longitudinal ends of the collar; the collar has an interior provided with an inner tube extending along a longitudinal direction of the collar; the inner tube is connected with the collar by a plurality of ribs located between the inner tube and the collar; the inner tube is formed with a plurality of axial grooves corresponding to the grooves of the collar; the axial grooves do not extend through an inner end of the inner tube, thereby forming a grooved segment and a grooveless segment in the inner tube; the collar is inserted into an end hole of the window shade rod; the fixation piece has a projection inserted into the inner tube to expand the grooved segment of the inner tube to force the collar to press an inner wall of the end hole of the window shade rod; the projection of the fixation piece has an inner end embraced by the grooveless segment of the inner tube.