Patent ID: 9376861
Filing Date: 2016-06-28
CPC Classification: E06B

Claim Text:
1. A winding device for a cordless roller blind, and adapted to be mounted to a supporting structure opposite to a securing seat to cooperate with the securing seat for securing therebetween a blind unit, which includes a pole and a blind wound around the pole, said winding device comprising: a mounting seat adapted to be mounted on the supporting structure; a winding unit including a casing and a winding set that is mounted to said casing and that is adapted for rolling the pole to bring the blind to fold upwardly and unfold downwardly relative to the securing seat and said mounting seat; and a connecting mechanism for connecting removably said winding unit to said mounting seat in such a manner that said winding unit is upright when connected to said mounting seat, said connecting mechanism including a first connecting set that is disposed on one of said casing and said mounting seat and at least two second connecting sets that are disposed on the other of said casing and said mounting seat, said first connecting set being removably engageable with one of said second connecting sets so as to connect removably said winding unit to said mounting seat; wherein said first connecting set includes two first connecting elements, each of said second connecting sets including a second connecting element, said second connecting sets sharing a common second connecting element, one of said first connecting elements being engageable with said common second connecting element and the other of said first connecting elements being engageable with the other of said second connecting element of one of said second connecting sets; wherein said second connecting element of each of said second connecting sets is a male connecting element in a form of a protrusion that extends from the other one of said casing and said mounting seat, a line that connects said second connecting element of one of said second connecting sets being substantially perpendicular to a line that connects said second connecting element of the other of said second connecting sets; wherein said first connecting elements are female connecting elements in a form of through holes that are formed in said one of said casing and said mounting seat, one of said first connecting elements being a circular through hole and the other of said first connecting elements being a through hole that has a large dimension portion and a small dimension portion connected to said large dimension portion and smaller in dimension than said large dimension portion; wherein said common second connecting element has a uniform circular cross-section, each of said second connecting elements other than said common second connecting element having a head portion and a neck portion that is connected to said head portion and that is smaller in dimension than said head portion; wherein said head portion of said other of said second connecting element is extendible into said large dimension portion and is restricted from moving out of said other of said first connecting elements by said head portion when said other of said second connecting element is moved from having said neck portion extending through said large dimension portion to having said neck portion extending through said small dimension portion.