Patent ID: 8721246

Claim:
A fastener comprising an anchor that is configured to be inserted into an attaching hole formed in a panel, wherein the anchor comprises a pillar, a pair of engagement strips positioned in both sides of the pillar, and a guide block formed in a distal end of the pillar and having a planar shape corresponding to a shape of the attaching hole, wherein the pair of engagement strips are configured to pass through the attaching hole while being flexed inwardly and engaging a periphery of the attaching hole when the anchor is inserted into the attaching hole, wherein the guide block has a pair of projections that are laterally projected from the pillar, and outer surfaces that are formed in the projections, wherein the engagement strips respectively have elastically deformable connecting portions connected to inner surfaces of the projections of the guide block, and inclined outer surfaces that are obliquely extended outwardly from the connecting portions, so as to be flexed with respect to the pillar due to elastic deformation of the connecting portion, wherein the connecting portions of the engagement strips are respectively positioned radially inside the outer surface of the guide block, wherein the anchor is obliquely inserted into the attaching hole of the panel, only the outer surface of one of the engagement strips contacts a periphery of the attaching hole, and when upon rotation of the anchor, an axis of the anchor is aligned with an axis of the attaching hole, the guide block passes through the attaching hole, so that the outer surface of the other of the engagement strips contacts the periphery of the attaching hole.