Guide device for long object, and guide rail

An elongated object guiding device comprising:

• a protective guide including a plurality of links that are pivotally coupled to one another in a state arranged in series, wherein the links form an accommodation cavity that accommodates an elongated object, and the protective guide guides while protecting the elongated object accommodated in the accommodation cavity;
• and
• a guide rail that moves back and forth while guiding the protective guide as the protective guide moves back and forth in a longitudinal direction while forming a curved portion, wherein
• the protective guide includes a plurality of engagement portions arranged in the longitudinal direction in a manner allowing for engagement with the guide rail,
• the guide rail includes a guide groove that engages the engagement portions and extends in the longitudinal direction to allow the protective guide to be guided, and
• when the protective guide moves back and forth, the guide groove restricts movement of the engagement portions in a direction intersecting the longitudinal direction and allows movement of the engagement portions in the longitudinal direction.