Lavatory compartment structure of aircraft

1 . A lavatory compartment structure of an aircraft comprising:

a first lavatory compartment surrounded by a first housing;

a second lavatory compartment adjacent to the first lavatory compartment and surrounded by a second housing;

a movable wall that is movable between a closed position of closing a space between the first lavatory compartment and the second lavatory compartment and an open position of opening the space between the first lavatory compartment and the second lavatory compartment; and

a main lock mechanism of the movable wall,

wherein the first housing and the second housing constitute a lavatory housing,

wherein the main lock mechanism includes:

a first operation member that is operable from one side of either the first lavatory compartment or the second lavatory compartment;

a second operation member that is operable from the other side of the first lavatory compartment or the second lavatory compartment; and

a locking portion connected to the second operation member and that is movable between a lock position preventing movement of the movable wall with respect to the lavatory housing, and an unlock position enabling movement of the movable wall with respect to the lavatory housing,

wherein, by operating the first operation member, the first operation member may be shifted to either an engaged state in which the first operation member is engaged to the second operation member or a separated state in which the first operation member is separated from the second operation member, and

wherein, in the engaged state, the second operation member may not be operated to move the locking portion from the lock position to the unlock position, and in the separated state, the second operation member may be operated to move the locking portion from the lock position to the unlock position.

2 . The lavatory compartment structure of an aircraft according to claim 1 ,

wherein, when the locking portion is at the lock position, the first operation member may be shifted from the separated state to the engaged state.

3 . The lavatory compartment structure of an aircraft according to claim 1 ,

wherein the movable wall has access doors that may be opened and closed arranged on both sides thereof, and the main lock mechanism is disposed between the pair of access doors, and

wherein by opening one of the access doors, an operator may access the first operation member, and by opening the other one of the access doors, the operator may access the second operation member.

4 . The lavatory compartment structure of an aircraft according to claim 1 ,

wherein the first operation member includes a front side handle that may be operated to rotate, and a protruded portion that rotates together with the front side handle,

wherein the second operation member includes a back-side handle that may be shifted with respect to a rotation shaft of the front side handle and that may be operated to rotate, and a hook portion that rotates together with the back-side handle,

wherein the locking portion is an engagement key that rotates together with the back-side handle and that may be engaged with and separated from an engagement recess portion of the lavatory housing, and

wherein the front side handle is rotated to have the protruded portion abut against the hook portion to be shifted to the engaged state, and to have the protruded portion separate from the hook portion to be shifted to the separated state.

5 . The lavatory compartment structure of an aircraft according to claim 4 ,

wherein the second operation member further includes a link plate connected to the back-side handle, and a rod connected to the link plate, and

wherein the rod is moved to an axial direction by a drive force transmitted via the link plate by the rotation of the back-side handle, and may be engaged with and disengaged from an engagement recess portion of the lavatory housing positioned on an opposite side as the locking portion in an up-down direction interposing the movable wall.

6 . The lavatory compartment structure of an aircraft according to claim 1 ,

wherein the movable wall is arranged between a fixed wall and a supporting wall connected to the lavatory housing, the movable wall including a first panel, and a second panel that may be pivoted with respect to the first panel, wherein the second panel is connected in a pivotable manner to the supporting wall.

7 . The lavatory compartment structure of an aircraft according to claim 6 ,

wherein the main lock mechanism is disposed on the second panel, and a sub-lock mechanism that prevents relative movement of the first panel with respect to the lavatory housing is disposed on the first panel in a manner independent from the main lock mechanism.