A cord lock assembly for a shade assembly is provided. The cord lock assembly may include a spool rotatably attached to a housing, with the housing defining a pull cord channel. A pull cord may be provided that extends through the pull cord channel and wraps at least partially around the spool. The pull cord channel may include a roller configured to interact with the pull cord and a rear wall of the pull cord channel such that it may move between a locked and an unlocked position based at least in part by the angle at which the pull cord is held relative to a plane defined the shade assembly.