Roller unit and vehicular opening-closing body driving device

A roller unit that slidably supports a slide door along a guide rail installed at a vehicle main body and to which other end of an opening cable and other end of a closing cable are connected, wherein one end of the opening cable and one end of the closing cable are connected to a driving device configured to automatically open and close the slide door, the roller unit comprising:

• a bracket installed over the guide rail and the slide door and that supports the slide door at an end portion thereof which is on an opposite side to the vehicle main body;
• a roller installed at an end portion of the bracket on a slide door side and that rolls in the guide rail;
• a cable holder formed integrally with the bracket at the end portion of the bracket on the slide door side and that holds the other ends of the opening cable and the closing cable;
• and
• a cable guide detachably installed at the cable holder and that guides the opening cable and the closing cable,
• wherein the cable guide is formed to separate the opening cable and the closing cable from the bracket, and
• a load applied to the cable guide by tensile forces of the opening cable and the closing cable is received by the cable holder and the bracket.