Retainer structure

A retainer structure, comprising:

• a retainer main body inserted into an attachment hole of a panel, and also rotatable in a circumferential direction orthogonal to an insertion direction in an insertion state;
• a contacting piece formed to expand in a diameter of the retainer main body, and contacting a contacted member on the panel side by an insertion into the attachment hole so as to restrict the insertion;
• a clamping piece protruding from the retainer main body, contacting a hole wall of the attachment hole by inserting the retainer main body into the attachment hole, elastically evacuating to a retainer main body side so as to allow the insertion, and in a state wherein the retainer main body is inserted for a predetermined amount, elastically restoring to original state, clamping the panel between the clamping piece and the contacting piece, and also capable of passing through relative to an expanded-diameter portion in which a diameter of the attachment hole is partially expanded in a natural state;
• and
• an attaching piece in which an attached member is attached at an end side in the insertion direction relative to the clamping piece in the retainer main body, and also capable of passing through the expanded-diameter portion,
• wherein the clamping piece and the attaching piece are formed in a position different in the circumferential direction of the retainer main body such that a position, in which the retainer main body has rotated relative to the panel when the clamping piece passes through the expanded-diameter portion, differs from a position in which the retainer main body has rotated relative to the panel when the attaching piece passes through the expanded-diameter portion.