A curtain reel fixing assembly comprising plural cord winders 2 each with a bearing seat 3, a roller 4 and a positioning member 5 pivotally connected to one end of the bearing seat via a pivot portion 33. When the positioning member has an actuator 52 for rotating the positioning member about a pivot axis 51 so an engaging panel 54 is engaged with an engaging recess 412 located in a first rotary shaft 41 of the roller disposed to position the roller and hold it in place. When the positioning member is in the engaged position, an abutting block 55 at each end of the pivot axis is engaged with a protruding rib 12 on the curtain rail housing 1. A second shaft hole is located at the other end of the roller and is a polygon shape. Preferably the abutting blocks have a supporting surface 551 and a supporting corner 552 arrange in a polygon shape. The pivot portion two pivot ears 331 which engage between the pivot axis between a stopping flange 51 and the actuator 52.
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