Rotary holder for corrugated tube

A rotary holder (20) for a corrugated tube (23) is structured such that an inner rotary body (22) containing a corrugated tube (23) is received in an inner portion of an outer fixing body (21), and an outer peripheral sliding surface of the inner rotary body (22) slides along an inner sliding surface (26) of the outer fixing body (21). The outer fixing body (21) is formed by assembling a base member (24) and a cover (25) each having a recessed arch surface (28b) on an inner periphery thereof. The inner sliding surface is formed by connecting a recessed arch surface (28b) of the base member (24) to a recessed arch surface (30b) of the cover (25). Further, outer retracting surfaces (32) are respectively provided to both end portions of the recessed arch surface (28b) of the base member (24) so as to be extended to a tangential direction thereat.