Elongate object guiding device, and roller attachment

An elongated object guiding device comprising:

• a protective guide including links that are pivotally connected in series to define an accommodation space therein allowing for accommodation of an elongated object, wherein the protective guide protects and guides the elongated object accommodated in the accommodation space;
• a guide rail including a magnetic guide surface, wherein the guide surface guides the protective guide as the protective guide moves back and forth in a longitudinal direction and a curved portion forms in the protective guide;
• at least one roller that is arranged on the protective guide and arranged to be rollable on the guide surface;
• and
• a magnet arranged on the protective guide so as not to contact the guide rail and opposed toward the guide surface on which the roller rolls, wherein the magnet applies magnetic force to the guide surface to maintain contact between the roller and the guide surface when the protective guide moves back and forth.