Patent ID: 8522854
Filing Date: 2013-09-03
Classification: E06B

Abstract:
1. A window blind assembly, comprising: a headrail; a winding roller rotatable relative to said headrail about a horizontal axis for winding up or winding down a window covering; a rotating shaft having a shaft end which is adapted to be coupled with the winding roller such that a rotation of said rotating shaft about an upright axis transverse to the horizontal axis results in horizontal rotation of the winding roller, and a shaft body which extends from said shaft end along the upright axis and which has a thread segment formed on an outer shaft surface thereof; a sleeve shell which is disposed to surround and permit said shaft body to be rotatable relative thereto so as to cooperatively define an accommodation space, and which has a surrounding wall that extends in a direction of upright axis to terminate at first and second peripheral ends, and that includes first and second surrounding segments respectively proximate to said first and second peripheral ends; a carrier which has an annular seat wall that surrounds said thread segment, and an actuated annular wall that surrounds said annular seat wall and that extends in the direction of upright axis to terminate at first and second actuated ends, said carrier being disposed in said accommodation space and movable along the upright axis between a pressed position, where said first peripheral end is in pressing engagement with said first actuated end, and a non-pressed position, where said second actuated end rests on said second peripheral end; a force transmitting member which is carried on said annular seat wall and which is engaged with said thread segment; and a rotation preventing unit disposed between said first surrounding segment and said actuated annular wall such that, when said carrier is in the pressed position, an axially manual force applied to said surrounding wall is transmitted to move said actuated annular wall along the upright axis so as to rotate said rotating shaft about the upright axis through engagement of said force transmitting member with said thread segment, thereby winding up the window covering.