Toilet exterior structure of aircraft lavatory unit

1. A toilet exterior structure of an aircraft lavatory unit, comprising:

a toilet body comprising a bowl portion and an upper end outer peripheral plate portion extending along an upper end outer periphery of the bowl portion with a width at an upper end of the bowl portion;

a support portion configured to support the toilet body on a floor;

a shroud comprising a flange placed in a peripheral wall portion covering peripheries of the toilet body and the support portion, and placed in the upper end outer peripheral plate portion; and

a toilet seat placed on the flange;

the flange comprising a main body plate portion extending annularly along the upper end outer peripheral plate portion with a width larger than the width with which the upper end outer peripheral plate portion extends;

a shroud mount being placed in the upper end outer peripheral plate portion and being provided in a lower surface facing downward of the main body plate portion;

the shroud mount comprising a plurality of space portions formed by a plurality of partition walls provided at intervals in a circumferential direction of the main body plate portion, and the plurality of space portions being opened downward between the plurality of partition walls and extending in a width direction of the main body plate portion; and

in a state where the main body plate portion is placed in the upper end outer peripheral plate portion via the plurality of partition walls, a plurality of air communication passages being formed by the plurality of space portions between the lower surface of the main body plate portion and the upper end outer peripheral plate portion, and communicating a space inside of the upper end outer peripheral plate portion in the width direction and a space outside of the upper end outer peripheral plate portion in the width direction.

2. The toilet exterior structure of an aircraft lavatory unit according to claim 1 , wherein

the main body plate portion has a width orthogonal to an extension direction of the main body plate portion;

the plurality of partition walls extend in a width direction of the main body plate portion; and

as viewed in a plan view, the upper end outer peripheral plate portion is positioned in an intermediate portion in an extension direction of the plurality of partition walls.

3. The toilet exterior structure of an aircraft lavatory unit according to claim 1 , wherein

the shroud mount, in addition to the plurality of partition walls, comprises an inner peripheral wall extending along an inner peripheral end of the main body plate portion at a section close to the inner peripheral end, and an outer peripheral wall extending along an extension direction of an outer peripheral end of the main body plate portion at a section close to the outer peripheral end;

the plurality of partition walls extend in the width direction of the main body plate portion, and both ends in the extension direction of the plurality of partition walls are connected to the inner peripheral wall and the outer peripheral wall; and

the shroud mount is separate from the shroud and is attached to a lower surface of the flange with an adhesive.

4. The toilet exterior structure of an aircraft lavatory unit according to claim 1 , wherein

the shroud mount is integrally formed with the shroud; and

the plurality of partition walls project from the lower surface of the main body plate portion.

5. The toilet exterior structure of an aircraft lavatory unit according to claim 1 , wherein

the shroud mount is integrally formed with the shroud;

the plurality of partition walls project from the lower surface of the main body plate portion;

the flange, in addition to the main body plate portion, comprises: an inner surface plate portion extending along the extension direction of the main body plate portion while projecting downward from an inner peripheral end of the main body plate portion, and concealing an inside of the upper end outer peripheral plate portion; and an outer surface plate portion projecting downward from an outer peripheral end of the main body plate portion, extending along the extension direction of the main body plate portion, concealing an outside of the upper end outer peripheral plate portion, and connected to the peripheral wall portion; and

the plurality of partition walls extend in the width direction of the main body plate portion, and both ends in the extension direction of the plurality of partition walls are connected to the inner surface plate portion and the outer surface plate portion.

6. The toilet exterior structure of an aircraft lavatory unit according to claim 1 , wherein the plurality of partition walls each extend curvilinearly as a protrusion in the circumferential direction of the main body plate portion.

7. The toilet exterior structure of an aircraft lavatory unit according to claim 1 , wherein the plurality of partition walls each comprise a bent portion in an intermediate portion in the extension direction of the plurality of partition walls, and the bent portion is placed on the upper end outer peripheral plate portion.

8. The toilet exterior structure of an aircraft lavatory unit according to claim 2 , wherein

the shroud mount, in addition to the plurality of partition walls, comprises an inner peripheral wall extending along an inner peripheral end of the main body plate portion at a section close to the inner peripheral end, and an outer peripheral wall extending along an extension direction of an outer peripheral end of the main body plate portion at a section close to the outer peripheral end;

the plurality of partition walls extend in the width direction of the main body plate portion, and both ends in the extension direction of the plurality of partition walls are connected to the inner peripheral wall and the outer peripheral wall; and

the shroud mount is separate from the shroud and is attached to a lower surface of the flange with an adhesive.

9. The toilet exterior structure of an aircraft lavatory unit according to claim 8 , wherein

the shroud mount is integrally formed with the shroud; and

the plurality of partition walls project from the lower surface of the main body plate portion.

10. The toilet exterior structure of an aircraft lavatory unit according to claim 2 , wherein

the shroud mount is integrally formed with the shroud;

the plurality of partition walls project from the lower surface of the main body plate portion;

the flange, in addition to the main body plate portion, comprises: an inner surface plate portion extending along the extension direction of the main body plate portion while projecting downward from an inner peripheral end of the main body plate portion, and concealing an inside of the upper end outer peripheral plate portion; and an outer surface plate portion projecting downward from an outer peripheral end of the main body plate portion, extending along the extension direction of the main body plate portion, concealing an outside of the upper end outer peripheral plate portion, and connected to the peripheral wall portion; and

the plurality of partition walls extend in the width direction of the main body plate portion, and both ends in the extension direction of the plurality of partition walls are connected to the inner surface plate portion and the outer surface plate portion.

11. The toilet exterior structure of an aircraft lavatory unit according to claim 10 , wherein the plurality of partition walls each extend curvilinearly as a protrusion in the circumferential direction of the main body plate portion.

12. The toilet exterior structure of an aircraft lavatory unit according to claim 10 , wherein the plurality of partition walls each comprise a bent portion in an intermediate portion in the extension direction of the plurality of partition walls, and the bent portion is placed on the upper end outer peripheral plate portion.