Abstract: A line fixing device includes a first housing, a second housing disposed to face the first housing, and a fixing member at least partially provided between the first housing and the second housing and configured to hold and fix a line. The fixing member includes a base portion, a column portion, protruding from a center of the base portion, around which the line is to be wound, and a plurality of latching protrusions disposed at predetermined intervals along an outer periphery of the base portion and configured to hold and fix a portion of the line which is not wound around the column portion. The latching protrusions have a tapered shape with a diameter gradually decreasing away from the base portion.