Wire supporting structure supporting electric wire extending between bogie and carbody in railcar and method of connecting electric wire
A wire supporting structure supporting an electric wire extending between a bogie and a carbody in a railcar includes: a support supported by the carbody and including a fitted portion; a carbody-side coupling device supported by the carbody; an electric wire connected to an electrical apparatus of the bogie; an electric wire-side coupling device provided at a tip end of the electric wire and connected to the carbody-side coupling device; and a bracket connected to a part of the electric wire, the part being located close to the electric wire-side coupling device, the bracket including a fitting portion fitted to the fitted portion of the support, the bracket being supported by the support with the fitting portion fitted in the fitted portion.
1. A wire supporting structure supporting an electric wire extending between a bogie and a carbody in a railcar, the wire supporting structure comprising:
a support supported by the carbody and including a fitted portion;
a carbody-side coupling device supported by the carbody;
an electric wire connected to an electrical apparatus of the bogie;
an electric wire-side coupling device provided at a tip end of the electric wire and electrically connected to the carbody-side coupling device; and
a bracket connected to a part of the electric wire, the part being located close to the electric wire-side coupling device, the bracket including a fitting portion fitted to the fitted portion of the support, the bracket being supported by the support with the fitting portion fitted in the fitted portion.
2. The wire supporting structure according to claim 1 , wherein a direction in which the fitting portion is fitted to the fitted portion is the same as a direction in which the electric wire-side coupling device is connected to the carbody-side coupling device.
3. The wire supporting structure according to claim 1 , wherein:
the support is a first support; and
the bracket is a first bracket,
the wire supporting structure further comprising:
a second support supported by the carbody and located closer to the bogie than the first support; and
a second bracket supported by the second support and connected to a part of the electric wire, the part being located closer to the bogie than the first bracket.
4. The wire supporting structure according to claim 1 , wherein:
the electrical apparatus is a traction motor;
the electric wire is a feeder wire connected to the traction motor;
the carbody-side coupling device is a carbody-side connector;
the electric wire-side coupling device is an electric wire-side connector fitted to the carbody-side connector; and
the support supports both the carbody-side connector and the bracket.
5. The wire supporting structure according to claim 4 , wherein:
the support includes
a flat plate portion arranged above the carbody-side connector,
a vertical plate portion projecting downward from an end edge of the flat plate portion, the end edge being located close to the bogie, and
an opening portion that is open at or in the vicinity of a bent portion between the vertical plate portion and the flat plate portion;
the bracket includes
an attaching portion connected to the feeder wire, and
a projecting portion projecting toward the carbody-side connector beyond the attaching portion;
the fitted portion is the opening portion;
the fitting portion is the projecting portion; and
the projecting portion is inserted into the opening portion to contact a lower surface of the flat plate portion.
6. The wire supporting structure according to claim 5 , wherein the support includes a pair of guide portions provided at a lower side of the flat plate portion and configured to guide both side ends of the projecting portion inserted into the opening portion.
7. The wire supporting structure according to claim 1 , further comprising:
a cleat supporting a part of the electric wire, the part being located close to the electric wire-side coupling device, wherein
the bracket is fastened to the cleat with a fastening member.
8. The wire supporting structure according to claim 1 , wherein:
the electrical apparatus is a third rail type power collector;
the electric wire is a collection wire connected to the power collector;
the carbody-side coupling device is an electric connection box;
the electric wire-side coupling device is a terminal inserted into the electric connection box; and
the support is provided at the electric connection box and supported by the carbody through the electric connection box.
9. The wire supporting structure according to claim 8 , wherein:
the support is fixed to both side surfaces of the electric connection box;
the fitted portion comprises vertically long slit portions formed at the support;
the bracket includes
an attaching portion connected to the collection wire, and
vertically long projecting portions projecting from both end portions of the attaching portion toward the slit portions; and
the fitting portion comprises the projecting portions.
10. A method of connecting an electric wire extending between a bogie and a carbody in a railcar, the method comprising:
fitting a fitting portion of a bracket to a fitted portion of a support supporting a carbody-side coupling device to prevent an electric wire-side coupling device from falling, the bracket being connected to a part of the electric wire, the part being located close to the electric wire-side coupling device; and
electrically connecting the electric wire-side coupling device and the carbody-side coupling device with the fitting portion fitted in the fitted portion.