Cable reel having inner cases

A cable reel in which a movable member forming an inner cylinder is rotatably coupled to a stationary member forming an outer cylinder and a flat cable is positioned in an annular space defined by the stationary and movable members, first and second inner cases that accommodate bus bars connected to conductive elements in the flat cable are attached to longitudinal opposite ends of the flat cable, the bus bars extend from the first and second inner cases, and the first and second inner cases are fixed in first and second inner case containing portions provided in the movable and stationary members, respectively, one of said first and second inner cases comprising:

• a first protection rib integral with one of said first and second inner cases and extending from an end surface of a cable outlet portion of said one of said first and second inner cases;
• wherein said first protection rib includes an arcuate portion defining a cable threading path.