Berthing divan with finished backrest panel and roller support mechanisms
A berthing divan for use in a conveyance such as an aircraft. In embodiments, the berthing divan includes a frame supporting a seat bottom subassembly and a backrest subassembly coupled for synchronous motion between a seating position and a berthing position. A finished backrest panel is attached to the frame. A plurality of roller support mechanisms are attached to the backrest subassembly and are configured to roll against the backrest panel as the divan transitions between the seating position and the berthing position, and are configured to support the backrest subassembly in each of the seating position and the berthing position of the divan.
1 . A divan, comprising:
a seat bottom subassembly and a backrest subassembly coupled for synchronous motion to transition the divan between a seating position and a berthing position;
a frame supporting the seat bottom subassembly and the backrest subassembly;
a backrest panel attached to the frame; and
a plurality of roller support mechanisms attached to the backrest subassembly, the plurality of roller support mechanisms configured to roll against the backrest panel as the divan transitions between the seating position and the berthing position, and the plurality of roller support mechanisms configured to support the backrest subassembly in each of the seating position and the berthing position of the divan.
2 . The divan according to claim 1 , wherein:
each of the plurality of roller support mechanisms is configured to be engaged with the backrest panel when the divan is in the seating position; and
each of the plurality of roller support mechanisms is configured to be engaged with the frame when the divan is in the berthing position.
3 . The divan according to claim 1 , wherein each roller support mechanism comprises:
a mounting block mounted to the backrest subassembly;
a roller arm rotatably coupled to the mounting block;
a roller rotatably mounted at one end of the roller arm;
a rotation limiter provided on the mounting block; and
a biasing member positioned between the mounting block and the roller arm, the biasing member configured to bias the roller arm toward the rotation limiter.
4 . The divan according to claim 3 , wherein the biasing member is configured to act on the roller arm to urge the roller into rolling contact with the backrest panel as the divan transitions, and cause the roller arm to rotate into contact with the rotation limiter when the roller support mechanism is out of contact with the backrest panel.
5 . The divan according to claim 3 , wherein the biasing member is a torsion spring configured to store mechanical energy when the roller comes into rolling contact with the backrest panel when the backrest subassembly transitions toward the seating position.
6 . The divan according to claim 3 , wherein the roller arm is configured to rotate toward the mounting block as the backrest subassembly transitions toward the seating position, and rotate away from the mounting block as the backrest subassembly transitions toward the berthing position.
7 . The divan according to claim 6 , wherein, when the divan is in the berthing position, the roller arm is oriented at a negative angle and further rotation of the roller arm is prevented by contact between the roller arm and the rotation limiter.
8 . The divan according to claim 1 , wherein the backrest panel is devoid of cutouts.
9 . The divan according to claim 1 , wherein the divan defines at least three seat positions and comprises at least three roller support mechanisms positioned in spaced apart relation.
10 . A berthing divan for an aircraft comprising at least two seat positions, the berthing divan comprising:
a seat bottom subassembly and a backrest subassembly coupled for synchronous motion to transition the berthing divan between a seating position and a berthing position;
a fixed headrest assembly;
a frame supporting the seat bottom subassembly, the backrest subassembly, and the fixed headrest assembly;
a backrest panel attached to the frame; and
a plurality of roller support mechanisms attached to the backrest subassembly, the plurality of roller support mechanisms configured to roll against the backrest panel as the berthing divan transitions between the seating position and the berthing position, and the plurality of roller support mechanisms configured to support the backrest subassembly in each of the seating position and the berthing position of the berthing divan.
11 . The berthing divan according to claim 10 , wherein:
each of the plurality of roller support mechanisms is configured to be engaged with the backrest panel when the berthing divan is in the seating position; and
each of the plurality of roller support mechanisms is configured to be engaged with the frame when the berthing divan is in the berthing position.
12 . The berthing divan according to claim 10 , wherein each roller support mechanism comprises:
a mounting block mounted to the backrest subassembly;
a roller arm rotatably coupled to the mounting block;
a roller rotatably mounted at one end of the roller arm;
a rotation limiter provided on the mounting block; and
a biasing member positioned between the mounting block and the roller arm, the biasing member configured to bias the roller arm toward the rotation limiter.
13 . The berthing divan according to claim 12 , wherein the biasing member is configured to act on the roller arm to urge the roller into rolling contact with the backrest panel as the divan transitions, and cause the roller arm to rotate into contact with the rotation limiter when the roller support mechanism is out of contact with the backrest panel.
14 . The berthing divan according to claim 13 , wherein the biasing member is a torsion spring configured to store mechanical energy when the roller comes into rolling contact with the backrest panel when the backrest subassembly transitions toward the seating position.
15 . The berthing divan according to claim 13 , wherein the roller arm is configured to rotate toward the mounting block as the backrest subassembly transitions toward the seating position, and rotate away from the mounting block as the backrest subassembly transitions toward the berthing position.
16 . The berthing divan according to claim 15 , wherein, when the berthing divan is in the berthing position, the roller arm is oriented at a negative angle and further rotation of the roller arm is prevented by contact between the roller arm and the rotation limiter.
17 . The berthing divan according to claim 10 , wherein the backrest panel is devoid of cutouts.
18 . The berthing divan according to claim 10 , wherein the berthing divan comprises at least three roller support mechanisms positioned in spaced apart relation.