Wire harness installation structure and wire harness-flattening band

1. 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.

2. The wire harness installation structure as set forth in claim 1 , wherein the bundle of the plurality of wires is covered by a protective member made by resin along the extending direction, and are kept, together with the protective member, in the flat shape.

3. The wire harness installation structure as set forth in claim 1 , wherein the bundle of the plurality of wires is received in a protector which includes a receiving space having a flat shape in the cross sectional view for receiving the bundle of the plurality of wires, so that the bundle of the plurality of wires is kept in the flat shape.

4. The wire harness installation structure as set forth in claim 1 , wherein an installing direction of the wire harness is changed by bending the flat portion.

5. The wire harness installation structure as set forth in claim 4 , wherein the wire harness is configured to be installed on a pivotable member having at least two portions which are pivotable to each other by a pivot shaft,

wherein the flat portion is bendable around the pivot shaft and installed on the pivotable member in a bent condition.

6. The wire harness installation structure as set forth in claim 4 , wherein the installing direction is changed by 90 degrees.

7. The wire harness installation structure as set forth in claim 1 , wherein the flat portion has a cross-sectional area that is wider and thinner than a cross-sectional area of the generally-circular portion,

wherein the flat portion is configured to be bent in a forwards or backwards direction.

8. A wire harness-flattening band for partially flattening a linear member including a wire bundle of a wire harness, comprising:

a wire harness fixing portion; and

a binding member that fastens an outer periphery of the linear member in a direction intersecting a longitudinal direction of the linear member, and fixes the linear member to a surface of the wire harness fixing portion,

wherein a portion of the linear member disposed on the surface of the wire harness fixing portion is pressed against the wire harness fixing portion by a fastening action of the binding member without interposing the binding member between the portion of the linear member and the surface of the wire harness fixing portion so that the portion of the linear member is flattened,

wherein the portion of the linear member that is flattened is disposed above the wire harness fixing portion.

9. The wire harness-flattening band as set forth in claim 8 , wherein the wire harness fixing portion has a plate portion on which the surface is formed, and a surface shape of the plate portion is flat; and

wherein the linear member is pressed against the surface by the binding member.

10. The wire harness-flattening band as set forth in claim 8 , wherein the surface of the wire harness fixing portion has a slanting surface so that the flattened portion of the linear member is formed so as to be slant in a direction intersecting the longitudinal direction of the linear member.

11. The wire harness-flattening band as set forth in claim 8 , wherein a protruded portion for bending the flattened portion of the linear member into an arcuate shape in a direction intersecting the longitudinal direction of the linear member is provided on the surface of the wire harness fixing portion.

12. The wire harness-flattening band as set forth in claim 8 , wherein a plurality of protruded portions for bending the flattened portion of the linear member into an arcuate shape in a direction intersecting the longitudinal direction of the linear member are provided on the surface of the wire harness fixing portion, and are spaced a predetermined distance from each other in the longitudinal direction.

13. The wire harness-flattening band as set forth in claim 8 , wherein a plurality of retaining projections are provided on the surface of the wire harness fixing portion.

14. The wire harness-flattening band as set forth in claim 8 , wherein the binding member is a binding band passed through a through hole of the wire harness fixing portion which extends in a direction intersecting the longitudinal direction of the linear member.

15. The wire harness-flattening band as set forth in claim 8 , further comprising:

a retaining member that is formed integrally with the wire harness fixing portion so as to mount a wire harness fixing portion on the mating mounting member,

wherein the retaining member includes a flange portion, an axis portion projection from a center of the flange portion, and an elastically-deformably retaining portion attached to the axis portion which is inserted into the mating mounting member.

16. The wire harness-flattening band as set forth in claim 8 , wherein the wire harness has a flat portion which is formed by thinning and flattening a part of the wire bundle over a predetermined length along an extending direction of the wire harness and are kept in a flat shape.