Wire harness installation structure and wire harness-flattening band

A wire harness installation structure in which a wire harness formed by bundling a plurality of wires into a generally-circular form in a cross-sectional view is installed,

• wherein the wire harness has a flat portion which is formed by thinning and flattening a part of a bundle of the plurality of wires over a predetermined length along an extending direction of the wire harness and are kept in a flat shape,
• wherein the bundle of the plurality of wires is kept in the flat shape by at least two binding members wound around the outside of the flat portion at distal end portions of the flat portion,
• wherein the flat portion extends along the extending direction of the wire harness and is formed between the at least two binding members such that the wire harness has at least two generally-circular portions on the outside of and adjacent to the at least two binding members,
• wherein the at least two binding members are separated from each other along the extending direction of the wire harness.